Baby-G BAX-100-3AER - Wristwatch CASIO - Free user manual and instructions

Product Type	Wristwatch
Brand	Casio
Model	Baby-G BAX-100-3AER
Power Source	One lithium battery (Type: CR1220)
Battery Life	Approximately 3 years (with alarm 10 sec/day and illumination 1.5 sec/day)
Water Resistance	5 ATM (50 meters) suitable for swimming but not scuba diving
Accuracy	±30 seconds per month at normal temperature
Display Type	Digital (LCD) and Analog (hands)
Timekeeping	Digital: hour, minutes, seconds, AM/PM, month, day, weekday; Analog: hour, minutes (20-sec step)
Calendar	Full auto-calendar (2000 to 2099), day of week shown automatically
Moon/Tide Data	Moon phase indicator, Moon age, tide graph for selected date and time
Stopwatch	1/100 sec, 23:59'59.99'' capacity, elapsed time, split time, two finishes
Countdown Timer	1 sec unit, range 1 min to 24 hours, auto-repeat option
Alarms	3 multi-function alarms (1 with snooze) and hourly time signal
Dual Time	Separate time zone, supports DST
Illumination	LED light, auto light switch (tilt sensor), duration selectable 1.5 or 3 sec
Button Operation Tone	On/off selectable
Band Material	Resin (typical for Baby-G)
Dimensions (approx.)	Not specified in manual; typical Baby-G case size ~ 43 mm diameter, 12 mm thickness
Weight (approx.)	Not specified in manual; typical Baby-G weight ~ 35-45 g
Operating Temperature	0°C to 40°C (32°F to 104°F) for LCD readability
Storage Temperature	Avoid extremes below -20°C and above 60°C
Maintenance	Clean with soft cloth; rinse after seawater or mud; avoid solvents, thinners, gasoline
Shock Resistance	Designed for impact resistance during daily use and light sports (Baby-G line)
Home Site Data	Configurable UTC differential, longitude, and lunitidal interval for accurate moon/tide data

Frequently Asked Questions - Baby-G BAX-100-3AER CASIO

How do I set the digital time and date on my Casio Baby-G BAX-100?

In the Timekeeping Mode, hold down A until the seconds start flashing. Use C to move between settings (seconds, DST, hour, minutes, year, month, day). Use B and D to change values. Press A twice to exit.

How do I adjust the analog hands to match the digital time?

Enter the Hand Setting Mode by pressing C six times from Timekeeping Mode. Hold A until the current digital time flashes. Use D to advance the hands by 20 seconds (hold for high speed). Press A to exit.

How do I use the stopwatch?

Press C to enter Stopwatch Mode. Press D to start, D again to stop. Press A to reset. For split times, press B during measurement. Refer to the manual for two finishes mode.

How do I set an alarm?

In Alarm Mode (press C repeatedly), use D to select alarm 1, 2, or 3. Hold A until hour flashes. Use C to move between hour, minutes, month, day. Use D and B to adjust. Press A to exit. For alarm 1, you can enable snooze.

How do I turn on the light manually?

Press B in any mode to illuminate the display. The illumination lasts 1.5 or 3 seconds depending on your setting.

How do I enable the auto light switch?

In Timekeeping Mode, hold B for about three seconds to toggle the auto light switch on or off. An indicator appears when on. The auto light switch turns off automatically after about six hours.

How do I set my home site (UTC differential, longitude, lunitidal interval) for accurate moon/tide data?

In Timekeeping Mode, hold A until seconds flash. Press A again to enter UTC differential setting. Use C to move between UTC, longitude value, east/west, lunitidal hours/minutes. Use B and D to change. Press A to exit.

How do I replace the battery?

Battery replacement should be done by an authorized Casio service center. The watch uses one CR1220 lithium battery. Have the water resistance checked after replacement.

Is this watch water resistant? Can I swim with it?

Yes, the Baby-G BAX-100 is water resistant to 5 ATM (50 meters). It is suitable for swimming, but not for scuba diving. Avoid operating buttons underwater and rinse with fresh water after saltwater exposure.

How do I clean the watch and band?

Use a soft cloth to wipe the case and band. For metal parts, use a mild soap solution and rinse thoroughly. Avoid thinners, gasoline, and solvents. For leather bands, wipe with a dry cloth. Ensure the band is dry before storage to prevent discoloration.

USER MANUAL Baby-G BAX-100-3AER CASIO

Operation Guide 5605

CASIO®

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully and keep it on hand for later reference when necessary.

Warning!

• The longitude, lunitidal interval, Moon phase indicator and tide graph data that appear on the display of this watch are not intended for navigation purposes. Always use proper instruments and resources to obtain data for navigation purposes.
• This watch is not an instrument for calculating low tide and high tide times. The tide graph of this watch is intended to provide a reasonable approximation of tidal movements only.
• CASIO COMPUTER CO., LTD. assumes no responsibility for any loss, or any claims by third parties that may arise through the use of this watch.

About This Manual

- Button operations are indicated using the letters shown in the illustration.

- For the sake of simplicity, the sample displays in this manual do not show the analog hands of the watch. - Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the "Reference" section.

- To ensure that this watch provides you with the years of service for which it is designed, be sure to carefully read and follow the instructions under "Operating Precautions" and "User Maintenance".

E

E-1

Contents

Getting Acquainted....E

General Guide....E-6

Timekeeping....E-8

To set the digital time and date....E-9

To toggle the Timekeeping Mode digital time

between DST and Standard Time....E-12

To configure Home Site data.... E-15

To toggle between 12-hour and 24-hour timekeeping ....E-17

To adjust the analog time E-18

Moon/Tide Data....E-20

To view the current Moon/Tide Data Mode data E-21

To specify a date....E-22

E-2

E-3

Illumination....E-39

To illuminate the display manually....E-39

To specify the illumination duration....E-40

To turn the auto light switch on and off....E-42

Reference E-44

To turn the button operation tone on and off....E-48

Specifications....E-53

Operating Precautions....E-56

User Maintenance....E-67

E-5E-4

General Guide

• Press © to change from mode to mode.
• In any mode (except when a setting screen is on the display), press Ⓐ to illuminate the face of the watch.

Timekeeping Mode Moon/Tide Data Mode Stopwatch Mode

graph LR
    A["Clock with 5:40s, 6:30s, 10:08:36"] --> B["Time Control: 19:6:30s, 6:00s"]
    B --> C["Time Control: 5T:00s, 0:00s"]
    C --> D["Hand Setting Mode: 0:00s, 0:00s"]
    D --> E["Dual Time Mode: 0:00s, 10:08s, 8:08s"]
    E --> F["Display Settings: H5, 10:08:36"]
    F --> G["Display Settings: 0T, 10:08s, Dual Time Mode"]

E-6

E-7

Timekeeping

PM Indicator

Moon phase indicator

This watch features separate digital and analog timekeeping. The procedures for setting the digital time (page E-9) and analog time (page E-18) are different.

- The Moon phase indicator (page E-44) shows the current Moon phase in accordance with the current date as kept in the Timekeeping Mode. - The tide graph (page E-46) shows tidal movements for the current date in accordance with the current time as kept in the Timekeeping Mode.

Important!

- Be sure to configure the current time and date, and your Home Site data (data for the site where you use the watch) correctly before using the functions of this watch. See "Home Site Data" (page E-13) for more information.

F-8

Digital Time and Date

Use the Timekeeping Mode to set and view a digital display of the current time and date. When setting the digital time, you can also configure settings for summer time (Daylight Saving Time or DST).

To set the digital time and date

graph LR
    A["1. In the Timekeeping Mode, hold down A until the second start to flash, which indicates the setting screen."] --> B["2. Press C to move the flashing in the sequence shown below to select the other settings."]
    B --> C["Seconds"]
    C --> D["Day Year Month"]
    D --> E["Minutes Hour DST"]
    E --> F["Clock"]

1. In the Timekeeping Mode, hold down Ⓐ until the seconds start to flash, which indicates the setting screen.
2. Press © to move the flashing in the sequence shown below to select the other settings.

graph LR
    A["Seconds"] --> B["Time Period"]
    B --> C["Day Year Month"]
    C --> D["Time Period"]
    D --> E["MinutesHour DST"]
    E --> F["Day Year Month"]
    F --> A

E-9

Operation Guide 5605

CASIO®

1. When the setting you want to change is flashing, use Ⓑ and Ⓓ to change it as described below.

Screen To do this: Do this:
36	Reset the seconds to 00	Press 1.
OF	Toggle between Daylight Saving Time (On) and Standard Time (OF)	Press 10.
10:08	Change the hour or minutes	Use 10 (-) and 10 (-).
20:19	Change the year
6:30	Change the month or day

1. Press Ⓐ twice to exit the setting screen.

2. The first press of Ⓐ displays the UTC differential setting screen. Pressing Ⓐ again exits the setting screen.

3. Resetting the seconds only (without changing the DST, hour, or minute setting) causes the analog minute hand setting to be adjusted automatically.

E-10

• See "Digital Time Daylight Saving Time (DST) Setting" below for details about the DST setting.
• The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

Digital Time Daylight Saving Time (DST) Setting

Daylight Saving Time (summer time) advances the digital time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

E-11

To toggle the Timekeeping Mode digital time between DST and Standard Time

1. In the Timekeeping Mode, hold down (A) until the seconds start to flash, which indicates the setting screen.
2. Press © once to display the DST setting screen.
3. Press Ⓓ to toggle between Daylight Saving Time (On displayed) and Standard Time (OF displayed).
4. Press Ⓐ twice to exit the setting screen. • The DST indicator appears on the Timekeeping, Moon/Tide Data, Alarm, and Hand Setting Mode screens to indicate that Daylight Saving Time is turned on. In the case of the Moon/Tide Data Mode, the DST indicator appears on the tide data screen only.

Home Site Data

Moon phase, tide graph data, and Moon/Tide Data Mode data will not be displayed properly unless Home Site data (UTC differential, longitude, and lunitidal interval) is configured correctly.

• The UTC differential is a value that indicates the time difference between a reference point in Greenwich, England and the time zone where a city is located.
• The letters "UTC" is the abbreviation for "Coordinated Universal Time", which is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cosium) clocks that keep time accurately to within microseconds. Loap seconds are added or subtracted as necessary to keep UTC in sync with the Earth's rotation.
• The lunitidal interval is the time elapsing between the Moon's transit over a meridian and the next high tide at that meridian. See "Lunitidal Interval" (page E-47) for more information.
• This watch displays (unitidal intervals in terms of hours and minutes.
• The "Site/Lunitidal Interval Data List" at the back of this manual provides UTC differential and longitude information around the world.

E-13

E-12

- The following is the initial factory default Home Site data (Tokyo, Japan) when you first purchase the watch, and whenever you have the battery replaced. Change these settings to match the area where you normally use the watch. UTC differential (+9.0); Longitude (East 140 degrees); Lonitidal interval (5 hours, 20 minutes)

To configure Home Site data

1. In the Timekeeping Mode, hold down (A) until the seconds start to flash, which indicates the setting screen.
2. Press Ⓐ again to display the UTC differential setting screen.
3. Press Ⓐ to move the flashing in the sequence shown below to select other settings.

graph TD
    A["UTC Differential"] --> B["Longitude Value"]
    B --> C["East Longitude/West Longitude"]
    C --> D["Luntilal Interval Minutes Luntilal Interval Hours"]
    D --> A

E-15

E-14

1. When the setting you want to change is flashing, use Ⓓ and Ⓑ to change it as described below.

Setting Screen	Button Operations
UTC Differential	UTC+9.0	Use 1(-) and 8(-) to change the setting.You can specify a value in the range of -12.0 to +14.0, in 0.5-hour units.
Longitude Value	LON140°E	Use 1(-) and 8(-) to change the setting.You can specify a value in the range of 0° to 180°, in 1-degree units.
East Longitude/West Longitude		Use 1to switch between east longitude (E) and west longitude (W).
Lunibdial Interval Hours, Minutes	INT5:20	Use 1(-) and 8(-) to change the setting.

- When the digital time DST setting is on, the UTC differential can be set in a range of -11.0 to +15.0 in 0.5-hour units.

1. Press Ⓐ to exit the setting screen.

E-16

To toggle between 12-hour and 24-hour timekeeping

In the Timekeeping Mode, press (D) to toggle between 12-hour timekeeping and 24-hour timekeeping.

• With 12-hour format, a P (PM) indicator is displayed near the hour digits between the hours of noon to 11:59 p.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.
• The P indicator is not displayed with the Timekeeping Mode time on the Countdown Timer Mode and Dual Time Mode screens.

E-17

Setting the Analog Time

Perform the procedure below when the time indicated by the analog hands does not match the time of the digital display.

To adjust the analog time

1. In the Timekeeping Mode, press © six times to enter the Hand Setting Mode (page E-7).

2. Hold down Ⓐ until the current digital time starts to flash, which indicates the analog setting mode.

3. Press ① to advance the analog time setting by 20 seconds.
4. Holding down ② advances the analog time setting at high speed.

- If you need to advance the analog time setting a long way, hold down ① until the time starts advancing at high speed, and then press ②. This looks the high-speed hand movement, so you can release the two buttons. High-speed hand movement continues until you press any button. It will also stop automatically after the time advances 12 hours or if an alarm (multi-function alarm, Hourly Time Signal, or countdown booster) starts to sound.

1. Press Ⓐ to exit the setting mode.

2. The watch will automatically adjust the minute hand slightly to match its internal second count when you exit the setting mode.
   • To return to the Timekeeping Mode, press ©.

F-18

E-19

Operation Guide 5605

CASIO®

Moon/Tide Data

Tide Data Screen

Moon phase indicator

Moon/tide data lets you view the Moon age and Moon phase for a particular date, and tidal movements for a particular date and time at your Home Site.

• If you suspect that the current Moon/tide data is wrong for some reason, check the current Timekeeping Mode settings (time, date, and Home Site), and correct them if required.
• See "Moon Phase Indicator" (page E-44) for information about the Moon phase indicator and "Tide Graph" (page E-16) for information about the tide graph.
• All of the operations in this section are performed in the Moon/Tide Data Mode, which you enter by pressing © (page E-6).

To view the current Moon/Tide Data Mode data

In the Moon/Tide Data Mode, press Ⓐ to toggle between the tide data screen and the Moon data screen.
- The tide graph shows the tide for the currently displayed time. The initial tide data screen shows the level for 6:00 a.m. The Moon data screen shows the Moon age and Moon phase for the current date.

Tide Data Screen Moon Data Screen

E-20

E-21

• While the tide data screen is displayed, press Ⓓ to advance to the next hour.
• While the Moon data screen is displayed, press (D) to advance to the next day.
• You can also specify a particular date (year, month, day) to view its tide data and Moon data. See "To specify a date" for more information.
• When you enter the Moon/Tide Data Mode, the screen (tide data or Moon data) that was displayed the last time you exited the mode appears first.

To specify a date

1. In the Moon/Tide Data Mode, hold down Ⓐ until the year setting starts to flash, which indicates the setting screen.

2. Press © to move the flashing in the sequence shown below to select the other settings.

E-22

E-23

Stopwatch

The stopwatch lets you measure elapsed time, split times, and two finishes.

• The display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
- The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
- The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
- Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
- All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing © (page E-6).

E-24

1. While a setting is flashing, use Ⓓ (+) or Ⓑ (-) to change it.
2. You can specify a date in the range of January 1, 2000 to December 31, 2099.
3. Press Ⓐ to exit the setting screen.
4. Use Ⓐ to display either the tide data screen or the Moon data screen.

To measure times with the stopwatch

Elapsed Time

graph LR
    A["Start Stop Resume Stop Clear"] --> B["Split Time"]
    B --> C["Split Split"]
    C --> D["Split release Stop Clear"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333

Two Finishes

graph LR
    A["Start Split"] --> B["A"]
    B --> C["A"]
    C --> D["Stop"]
    D --> E["Split release"]
    E --> F["Clear"]

    subgraph Start Split
        A
        B
        C
        D
        E
        F
    end

    subgraph Stop
        D
        E
    end

    note1["First runner finishes."]
    note2["Display time of first runner."]
    note3["Second runner finishes."]
    note4["Display time of second runner."]

E-25

Countdown Timer

You can set the countdown timer within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.

• You can also select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.
• All of the operations is this section are performed in the Countdown Timer Mode, which you can enter using © (page E-7).

E-26

To use the countdown timer

Press ① while in the Countdown Timer Mode to start the countdown timer.
- When the end of the countdown is reached and auto-repeat is turned off, the alarm sounds for 10 seconds or until you stop it by pressing any button. The countdown time is automatically reset to its starting value after the alarm stops.
- When auto-repeat is turned on, the countdown will restart automatically without pausing when it reaches zero. The alarm sounds in order to signal when the countdown reaches zero.
- The countdown timer measurement operation continues even if you exit the Countdown Timer Mode.
- Press Ⓓ while a countdown operation is in progress to pause it. Press Ⓓ again to resume the countdown.
- To completely stop a countdown operation, first pause it (by pressing Ⓑ), and then press Ⓐ. This returns the countdown time to its starting value.

E-27

To set up the countdown timer

1. While the countdown start time is on the display in the Countdown Timer Mode, hold down Ⓐ until the hour setting of the countdown start time starts to flash, which indicates the setting screen.

- If the countdown start time is not displayed, use the procedure under "To use the countdown timer" to display it.

1. Press © to move the flashing in the sequence shown below to select other settings.

1. While a setting is flashing, use ① and ② to change it as described below.

Screen To	do this: Do this:
0:00	Change the hours or minutes	Use (1) (+) and (2) (-).
00	Toggle auto-repeat on (On) and off (OF)	Press (D).

• To specify a countdown start time of 24 hours, sel 0:00.

1. Press Ⓐ to exit the setting screen.

2. The auto-repeat on indicator] is displayed on the Countdown Timer Mode screen while this function is turned on.

3. Frequent use of auto-repeat and the alarm can run down battery power.

F-28

E-29

Operation Guide 5605

CASIO®

Alarms

You can set up to three independent multi-function alarms with hour, minutes, month, and day. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms has a snooze feature. You can also turn on an Hourly Time Signal that causes the watch to beep every hour on the hour.

• There are three alarms numbered 1 through 3. The Hourly Time Signal screen is indicated by :00.
- All of the operations in this section are performed in the Alarm Mode, which you enter by pressing © (page E-7).

Alarm Types

The alarm type is determined by the settings you make, as described below.

Daily alarm

Set the hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at the time you set.

- Date alarm

Set the month, day, hour and minutes for the alarm time. This type of setting causes the alarm to sound at the specific time, on the specific date you set.

- 1-Month alarm

Set the month, hour and minutes for the alarm time. This type of setting causes the alarm to sound everyday at time you set, only during the month you set.

• Monthly alarm

Set the day, hour and minutes for the alarm time. This type of setting causes the alarm to sound every month at the time you set, on the day you set.

E-30

E-31

To set an alarm time

1. In the Alarm Mode, use Ⓓ to scroll through the alarm screens until the one whose time you want to set is displayed.

• Alarm 1 has a snooze feature.

- The snooze alarm operation repeats every five minutes.

1. After you select an alarm, hold down (A) until the hour setting of the alarm time starts to flash, which indicates the setting screen. • This operation automatically turns on the alarm.

E-32

1. Press © to move the flashing in the sequence shown below to select other settings.

1. While a setting is flashing, use Ⓓ (+) and Ⓑ (−) to change it.

- To set an alarm that does not include a month (daily alarm, monthly alarm), set for the month. Use ① and ② until the - mark appears (between 12 and 1) while month setting is flashing.

- To set an alarm that does not include a day (daily alarm, 1-month alarm), set for the day. Use (D) and (B) until the mark appears (between the end of the month and 1) while the day setting is flashing.

- When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. or p.m. (P indicator).

1. Press Ⓐ to exit the setting screen.

E-33

Alarm Operation

The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. While the snooze function is turned on, the alarm operation will repeat every five minutes up to seven times, or until the alarm or snooze function is turned off.

• To stop the alarm tone after it starts to sound, press any button.

- Performing any one of the operations below during a 5-minute interval between snooze alarms cancels the current snooze alarm operation. Displaying the Timekeeping Mode setting screen (page E-9) Displaying the alarm 1 setting screen (page E-32)

To test the alarm

In the Alarm Mode, hold down Ⓓ to sound the alarm.

To turn Alarms 2 and 3, and the Hourly Time Signal on and off

Alarm on indicator

1. In the Alarm Mode, use Ⓓ to select alarm number 2 or 3, or the hourly time signal.

2. Press Ⓐ to toggle it on and off.

3. Turning on alarm 2 or 3 displays the alarm on
   indicator on its screen.

4. Turning on the Hourly Time Signal displays the hourly time signal on indicator.
5. The alarm on (ALM) indicator and Hourly time Signal on (SIG) indicator are displayed in all modes.

Hourly time signal on indicator

E-35

E-34

To select the operation of Alarm 1

1. In the Alarm Mode, use Ⓓ to select Alarm 1.

2. Press Ⓐ to cycle through the available settings in the sequence shown below.

• The applicable alarm on indicator (SNZ ALM) is displayed in all modes when an alarm is turned on.
  • SNZ indicator flashes during the 5-minute intervals between alarms.
• Displaying the Alarm 1 setting screen (page E-32) while the snooze alarm is turned on automatically turns off the snooze feature.

E-36

1. When the setting you want to change is flashing, use Ⓑ and Ⓓ to change it as described below.

Screen To do this: Do this:
OF	Toggle between Daylight Saving Time (On) and Standard Time (OF)	Press (D):
8:08	Change the hour or minutes	Use (B+) and (B-).

1. Press Ⓐ to exit the setting screen.

- The DST indicator on the Dual Time Mode screen indicates that DST is turned on for the Dual Time Mode time.

Dual Time

The Dual Time Mode lets you keep track of time in a different time zone. You can select Standard Time or Daylight Saving Time for the Dual Time Mode time. - In the Dual Time Mode, the seconds count is synchronized with the seconds count of the current digital time.

To set the Dual Time

Dust time (Hour : Minutes)

1. Press © to enter the Dual Time Mode (page E-7).
2. In the Dual Time Mode, hold down Ⓐ until the DST setting starts to flash, which indicates the setting screen.
3. Press © to move the flashing in the sequence shown below to select the other settings.

Illumination

Auto light switch indicator

An LED (light-emitting diode) illuminates the face of the watch for easy reading in the dark. The watch's auto light switch turns on illumination automatically when you angle the watch towards your face.

- The auto light switch must be turned on (indicated by the auto light switch indicator) for it to operate. - See "Illumination Precautions" (page E-50) for other important information about using illumination.

To illuminate the display manually

In any mode, press Ⓗ to turn on illumination.
- The above operation turns on illumination regardless of the current auto light switch setting.
- You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press (B), the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

E-39

F-38

Operation Guide 5605

CASIO®

To specify the illumination duration

1. In the Timekeeping Mode, hold down Ⓐ until the seconds start to flash, which indicates the setting screen.
2. While the seconds are flashing, press (8) to toggle the illumination duration between 1.5 seconds (*) and 3 seconds (‡).
3. Press Ⓐ twice to exit the setting screen.

About the Auto Light Switch

Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode.

Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.

- Wear the watch on the outside of your wrist.

E-40

E-41

Warning!

• Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
- When you are wearing the watch, make sure that its auto light switch is turned off before riding a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down Ⓗ for about three seconds to toggle the auto light switch on (auto light switch indicator displayed) and off (auto light switch indicator not displayed).

- The auto light switch indicator remains in all modes while the auto light switch is turned on.

E-42

- In order to protect against running down the battery, the auto light switch will turn off automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.

E-43

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Moon Phase Indicator

The Moon phase indicator of this watch indicates the current phase of the Moon as shown below.

(part you cannot see) Moon phase (part you can see)

Moon Phase Indicator
Moon Age	0.0-1.827.7-20.5	1.9-5.5	6.9-2 9.3-	2.9 13.0-	6.6 16.7-20.2	20.3-23.9	24.0-27.5
Moon Phase	New Moon		First Quarter (Waxing)		Full Moon		Last Quarter (Waning)

E-44

• The Moon phase indicator shows the Moon as viewed at noon from a position in the Northem Hemisphere looking south. Note that at times the image shown by the Moon phase indicator may differ from that of the actual Moon in your area.
• The left-right orientation of the Moon phase is reversed when viewing from the Southern Hemisphere or from a point near the equator.

Moon Phases and Moon Age

The Moon goes through a regular 29.53-day cycle. During each cycle, the Moon appears to wax and wane as the relative positioning of the Earth, Moon, and Sun changes.

E-45

Tide Graph

The Tide Graph has six graphic segments, each of which indicates a different tide level. The current tide level is indicated by the displayed graphic segment.

graph LR
    A["Low Tide"] --> B["(Rising Tide)"]
    B --> C["High Tide"]
    C --> D["(Falling Tide)"]
    D --> E["Low Tide"]

Tidal Movements

Tides are the periodic rise and fall of the water of oceans, seas, bays, and other bodies of water caused mainly by the gravitational interactions between the Earth, Moon and Sun. Tides rise and fall about every six hours. The tide graph of this watch indicates tidal movement based on the Moon's transit over a meridian and the lunitidal interval. The lunitidal interval differs according to your current location, so you must specify a lunitidal interval in order to obtain the correct tide graph readings.

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- The tide graph displayed by this watch is based on the current Moon age. Remember that the margin for error of the Moon age displayed by this watch is ± 1 day. The greater the error in a particular Moon age, the greater the error in the resulting tide graph.

Lunitidal Interval

Theoretically, high tide is at the Moon's transit over the meridian and low tide is about six hours later. Actual high tide occurs somewhat later, due to factors such as viscosity, friction, and underwater topography. Both the time differential between the Moon's transit over the meridian until high tide and the time differential between the Moon's transit over the meridian until low tide are known as the "lunitidal interval". When setting the lunitidal interval for this watch, use the time differential between the Moon's transit over the meridian until high tide.

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Button Operation Tone

The button operation tone sounds any time you press one of the watch's buttons. You can turn the button operation tone on or off as desired.
- Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Countdown Timer Mode alarm all operate normally.

To turn the button operation tone on and off

In any mode (except when a setting screen is on the display), hold down Ⓐ to toggle the button operation tone on (✗ not displayed) and off (✗ displayed).

- Holding down © to turn the button operation tone on or off also causes the watch's current mode to change.

- The indicator is displayed in all modes when the button operation tone is turned off.

Auto Return Features

- If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen. - If you leave the watch in the Moon/Tide Data, Alarm or Hand Setting Mode for two or three minutes without performing any operation, it automatically changes to the Timekeeping Mode.

Scrolling

The Ⓑ and Ⓓ buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

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Timekeeping

• Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
  • The year can be set in the range of 2000 to 2099.
• The watch's built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch's battery replaced.

Illumination Precautions

• Illumination may be difficult to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Illumination turns off automatically depends on the current illumination duration setting.
  • Frequent use of illumination runs down the battery.

Auto light switch precautions

- Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.

More than 15 degrees too high

• Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.
• Illumination turns off in about 1.5 seconds or 3 seconds, even if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.

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• Under certain conditions, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.

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Specifications

Accuracy at normal temperature: ±30 seconds a month

Digital Timekeeping: Hour, minutes, seconds, a.m./p.m. (P), month, day, day of the week

Time format: 12-hour and 24-hour

Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099

Other: Daylight Saving Time (summer time)/Standard Time; Home Site data settings (UTC differential, longitude, lunitidal interval)

Analog Timekeeping: Hour, minutes (hand moves every 20 seconds)

Moon/Tide Data: Tide level for a specified date and time; Moon phase indicator and Moon age for a specified date

Stopwatch

Measuring unit: 1/100 second

Measuring capacity: 23:59'59.99"

Measuring modes: Elapsed time, split time, two finishes

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Countdown Timer

Measuring unit: 1 second

Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

Time up alert duration: 10 seconds

Other: Auto-repeat timing

Alarms: 3 Multi-function* alarms (1 with snooze feature);

Hourly Time Signal

^ Alarm type: Daily alarm, Date alarm, 1-month alarm, Monthly alarm

Alert duration: 10 seconds

Dual Time: Hour, minutes, seconds, a.m./p.m. (P)

Other: Daylight Saving Time (summer time)/Standard Time

Illumination: LED (light-emitting diode); Auto Light Switch; selectable illumination duration (approximately 1.5 seconds or 3 seconds)

Other: Button operation tone on/off

Battery: One lithium battery (Type: CR1220)

Approximately 3 years on type CR1220 (assuming alarm operation 10 sec./day and one illumination operation 1.5 sec./day)

Frequent illumination shortens the battery life.

Specifications are subject to change without notice.

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Operating Precautions

Water Resistance

• The information below applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.

		Water Resistance Under Daily Use	Enhanced Water Resistance Under Daily Use
			5 Atmospheres	10 Atmospheres	20 Atmospheres
Marking	On watch front or on back cover	No BAR mark	5BAR 100	AR 200BAR
Examples of Daily Use	Hand washing, rain Yes	Yes Yes Yes
	Water rested work, swimming	No Yes	Yes Yes
	Windsurfing No No Yes Yes
	Skin diving No No Yes Yes

Do not use your watch for scuba diving or other types of diving that requires air tanks. E-56 OPUM-E

• Watches that do not have WATER RESIST or WATER RESISTANT marked on the back cover are not protected against the effects of sweat. Avoid using such a watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water.
• Even if a watch is water resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass.
• Do not operate the crown or buttons while your watch is submersed in water or wet.
• Avoid wearing your watch while in the bath.
• Do not wear your watch while in a heated swimming pool, sauna, or any other high temperature/high humidity environment.
• Do not wear your watch while washing your hands or face, while doing
  housework, or while performing any other task that involves soaps or detergents.
  • After submersion in seawater, use plain water to rinse all salt and dirt from your watch.
• To maintain water resistance, have the gaskets of your watch replaced periodically (about once every two or three years).

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• A trained technician will inspect your watch for proper water resistance whenever you have its battery replaced. Battery replacement requires the use of special tools. Always request battery replacement from your original retailer or from an authorized CASIO service center.
• Some water-resistant watches come with fashionable leather bands. Avoid swimming, washing, or any other activity that causes direct exposure of a leather band to water.
• The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in temperature. No problem is indicated if the fogging clears up relatively quickly. Sudden and extreme temperature changes (such as coming into an air conditioned room in the summer and standing close to an air conditioner outlet, or leaving a heated room in the winter and allowing your watch to come into contact with snow) can cause it to take longer for glass fogging to clear up. If glass fogging does not clear up or if you notice moisture inside of the glass, immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
• Your water-resistant watch has been tested in accordance with International Organization for Standardization regulations.

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Band

• Tightening the band too tightly can cause you to sweat and make it difficult for air to pass under the band, which can lead to skin irritation. Do not fasten the band too tightly. There should be enough room between the band and your wrist so you can insert your finger.
• Deterioration, rust, and other conditions can cause the band to break or come off of your watch, which in turn can cause band pins to fly out of position or to fall out. This creates the risk of your watch falling from your wrist and becoming lost, and also creates the risk of personal injury. Always take good care of your band and keep it clean.
• Immediately stop using a band if you even notice any of the following: loss of band flexibility, band cracks, band discoloration, band looseness, band connecting pin flying or falling out, or any other abnormality. Take your watch to your original retailer or to a CASIO service center for inspection and repair (for which you will be charged) or to have the band replaced (for which you will be charged).

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Operation Guide 5605

CASIO®

Temperature

- Never leave your watch on the dashboard of a car, near a heater, or in any other location that is subject to very high temperatures. Do not leave your watch where it will be exposed to very low temperatures. Temperature extremes can cause your watch to lose or gain time, to stop, or otherwise malfunction.

- Leaving your watch in an area hotter than +60°C (140°F) for long periods can lead to problems with its LCD. The LCD may become difficult to read at temperatures lower than 0°C (32°F) and greater than +40°C (104°F).

Impact

- Your watch is designed to withstand impact incurred during normal daily use and during light activity such as playing catch, tennis, etc. Dropping your watch or otherwise subjecting it to strong impact, however, can lead to malfunction. Note that watches with shock-resistant designs (G-SHOCK, BABY-G, G-MS) can be worn while operating a chain saw or engaging in other activities that generate strong vibration, or while engaging in strenuous sports activities (motocross, etc.)

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Magnetism

- The hands of analog and combination (analog-digital) watches are moved by a motor that uses magnetic force. When such a watch is close to a device (audio speakers, magnetic necklace, cell phone, etc.) that emits strong magnetism, the magnetism can cause timekeeping to slow down, speed up, or stop, resulting in the incorrect time being displayed.

- Very strong magnetism (from medical equipment, etc.) should be avoided because it can cause malfunction of your watch and damage to electronic components.

Electrostatic Charge

- Exposure to very strong electrostatic charge can cause your watch to display the wrong time. Very strong electrostatic charge even can damage electronic components.

- Electrostatic charge can cause the display to go blank momentarily or cause a rainbow effect on the display.

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Chemicals

- Do not allow your watch to come into contact with thinner, gasoline, solvents, oils, or fats, or with any cleaners, adhesives, paints, medicines, or cosmetics that contain such ingredients. Doing so can cause discoloration of or damage to the resin case, resin band, leather, and other parts.

Storage

- If you do not plan to use your watch for a long time, thoroughly wipe it free of all dirt, sweat, and moisture, and store it in a cool, dry place.

Resin Components

- Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause color on resin components to transfer to the other items, or the color of the other items to transfer to the resin components of your watch. Be sure to dry off your watch thoroughly before storing it and make sure it is not in contact with other items.

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• Leaving your watch where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from your watch for long periods can cause it to become discolored.

- Friction caused by certain conditions (strong external force, sustained rubbing, impact, etc.) can cause discoloration of painted components.

- If there are printed figures on the band, strong rubbing of the printed area can cause discoloration.

- Leaving your watch wet for long periods can cause fluorescent color to fade. Wipe the watch dry as soon as possible after it becomes wet.

- Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high temperatures and humidity for long periods.

- Daily use and long-term storage of your watch can lead to deterioration, breaking, or bending of resin components. The extent of such damage depends on usage conditions and storage conditions.

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Leather Band

- Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color of the leather band to transfer to the other items or the color of the other items to transfer to the leather band. Be sure to dry off your watch thoroughly with a soft cloth before storing it and make sure it is not in contact with other items.

- Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from a leather band for long periods can cause it to become discolored.

CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration.

Metal Components

- Failure to clean dirt from metal components can lead to formation of rust, even if components are stainless steel or plated. If metal components exposed to sweat or water, wipe thoroughly with a soft, absorbent cloth and then place the watch in a well-ventilated location to dry.

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- Use a soft toothbrush or similar tool to scrub the metal with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing metal components, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.

Bacteria and Odor Resistant Band

- The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and moisture. A bacteria and odor resistant band suppresses the formation of organisms and bacteria. It does not protect against rash due to allergic reaction, etc.

Liquid Crystal Display

- Display figures may be difficult to read when viewed from an angle.

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Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of your watch or its malfunction.

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User Maintenance

Caring for Your Watch

Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your watch performs at the level for which it is designed, keep it clean by frequently wiping with a soft cloth to keep your watch and band free of dirt, sweat, water and other foreign matter.

- Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh water.

- For a metal band or a resin band with metal parts, use a soft toothbrush or similar tool to scrub the band with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing the band, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.

- For a resin band, wash with water and then wipe dry with a soft cloth. Note that sometimes a smudge like pattern may appear on the surface of a resin band. This will not have any effect on your skin or clothing. Wipe with a cloth to remove the smudge pattern.

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- Clean water and sweat from a leather band by wiping with a soft cloth. - Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation. Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation.

Dangers of Poor Watch Care

Rust

- Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not cleaned after it becomes dirty. - Dirt on your watch can make it impossible for oxygen to come into contact with the metal, which can lead to breakdown of the oxidization layer on the metal surface and the formation of rust.

- Rust can cause sharp areas on metal components and can cause band pins to fly out of position or to fall out. If you ever notice any abnormality immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.

- Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of clothing, cause skin irritation, and even interfere with watch performance.

Premature Wear

- Leaving sweat or water on a resin band or bezel, or storing your watch an area subject to high moisture can lead to premature wear, cuts, and breaks.

Skin Irritation

- Individuals with sensitive skin or in poor physical condition may experience skin irritation when wearing a watch. Such individuals should keep their leather band or resin band particularly clean. Should you ever experience a rash or other skin irritation, immediately remove your watch and contact a skin care professional.

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Operation Guide 5605

CASIO®

Battery Replacement

• Leave battery replacement up to your original retailer or authorized CASIO service center.
• Have the battery replaced only with the type specified in the User's Guide. Use of a different battery type can cause malfunction.
• When replacing the battery, also request a check for proper water resistance.
• Ornamental resin components may become worn, cracked, or bent over time when subjected to normal daily use. Note that if cracking or any other abnormality indicating possible damage is noticed in a watch submitted for battery replacement, your watch will be returned with an explanation of the abnormality, without the requested servicing being performed.

Initial Battery

• The battery that comes loaded in your watch when you purchase it is used for function and performance testing at the factory.
• The test battery may go dead quicker than the normally rated battery life as noted in the User's Guide. Note that you will be charged for replacement of this battery, even if replacement is required within your watch's warranty period.

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Low Battery Power

• Low battery power is indicated by large timekeeping error, by dim display contents, or by a blank display.
• Operation while battery power is low can result in malfunction. Replace the battery as soon as possible.

（一）公司基本情况

Site/Lunitidal Interval Data List

7

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Site/Lunitidal Interval Data List

Site	UTC Differential	Longitude Luntidal Interval
	Standard Time
Anchorage	-9 149°W 5:40
Bahamas	-5	77°W 7:30
Baja, California	-7 110°W 8:40
Bangkok	+7 101°E 4:40
Boston	-5	71°W 11:20
Buenos Aires	-3	58°W 6:00
Casablanca	+0	8°W 1:30
Christmas Island	+14 158°W 8:00
Dakar +0	17°W 2:40
Gold Coast	+10 154°E 8:30
Great Barrier Reef, Cairns	+10 146°E 9:40
Guam	+10 145°E 7:40

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Site	UTC Differential	Longitude Luntidal Interval
	Standard Time
Hamburg	+1 10°E 4:50
Hong Kong +9 114°E 9:10
Honolulu	-10 158°W 3:40
Jakarta	+7 107°E 0:00
Jeddah	+3 38°E 6:30
Karachi	+5 67°E 10:10
Kona, Hawaii	-10 156°W 8:00
Lima	-5	77°W 5:20
Lisbon	+0	9°W 2:00
London	+0	0°E 1:10
Los Angeles	-8 118°W 9:20
Maldives	+5 74°E 0:10
Manila	+8 121°E	10:30

L-2

Site	UTC Differential	Longitude Luntidal Interval
	Standard Time
Mauritius +4 57°E 0:50
Melbourne +10 145°E 2:10
Miami -5 80°W 7:30
Nourrea	+11 166°E 8:30
Pago Pago	-11 171°W 6:40
Palau	+9 135°E 7:30
Panama City	-5	80°W 3:00
Papoteo	-10 150°W 0:10
Rio De Janeiro	-3	43°W 3:10
Seattle	-8 122°W 4:20
Shanghai	+8 121°E 1:20
Singapore	+8 104°E	10:20
Sydney	+10 151°E 8:40

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Site	UTC Differential	Longitude Limital Interval
	Standard Time
Tokyo +9 140° E 5:20
Vancouver -8 123° W 5:10
Wellington +12 175° E 4:50

• The contents of the above table are current as of July 2018.
- The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.

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CASIO®

CASIO COMPUTER CO., LTD.

6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan