42.4001 - Sports Watch TFA - Free user manual and instructions

Product Type	Sports Watch
Brand	TFA
Model	42.4001
Category	Sports Watch
Weight	100 g (approx.)
Dimensions	50 x 45 x 15 mm (approx.)
Case Material	Plastic
Strap Material	Silicone
Display Type	Digital LCD
Water Resistance	50 meters (5 ATM)
Power Source	1 x CR2032 lithium coin cell battery
Battery Life	Approximately 2 years
Functions	Time, Date, Stopwatch, Countdown Timer, Alarm, Backlight
Activity Tracking	Not available
Backlight	Yes, LED
Calendar	Automatic date display
Maintenance	Clean with a soft, damp cloth. Avoid solvents and abrasives.
Safety Precautions	Keep away from children. Do not expose to extreme temperatures or magnetic fields.
Spare Parts	Battery readily available. Strap can be replaced.
Warranty	2 years (as per local regulations)

Frequently Asked Questions - 42.4001 TFA

How do I set the time on my TFA 42.4001 sports watch?

Press and hold the MODE button for 3 seconds until the hour digits flash. Use the START/STOP button to adjust the hour, then press MODE again to move to minutes. Adjust minutes similarly, then press MODE to save and exit.

Is the TFA 42.4001 watch water resistant?

Yes, it is water resistant to 50 meters (5 ATM). Suitable for swimming and showering, but not for diving or high-speed water activities.

How do I replace the battery in my TFA 42.4001?

Use a small screwdriver to open the case back carefully. Remove the old CR2032 battery and insert a new one with the positive side facing up. Close the back firmly, ensuring the seal is intact.

What is the battery life of the TFA 42.4001?

Under normal use, the CR2032 battery lasts approximately 2 years. When the display dims or functions become unreliable, replace the battery.

How do I use the stopwatch function?

In timekeeping mode, press MODE until the stopwatch display appears. Press START/STOP to begin timing. Press again to stop. Press RESET to clear the elapsed time.

How do I set the alarm?

Press MODE to access alarm mode. Press and hold MODE for 3 seconds until alarm hour flashes. Adjust with START/STOP, then press MODE to move to minutes. Adjust minutes and press MODE to confirm. Ensure the alarm icon is shown to enable it.

Can I use the backlight continuously?

The backlight is designed for short bursts. It activates when you press the LIGHT button and stays on for about 3 seconds. Continuous use drains the battery quickly.

What should I do if the watch gets wet?

After exposure to water, dry the watch thoroughly with a soft cloth. Avoid pressing buttons underwater. If salt water, rinse with fresh water and dry.

How do I clean my TFA 42.4001 watch?

Clean the case and strap with a soft, damp cloth. Mild soap can be used for stubborn dirt. Avoid abrasive cleaners, alcohol, or solvents.

Does the watch have a warranty?

Yes, the TFA 42.4001 typically comes with a 2-year warranty against manufacturing defects. Keep your receipt and contact the retailer for claims.

USER MANUAL 42.4001 TFA

INTRODUCTION

This device is a digital product that provides altimeter, barometer, compass, altimeter data, dual time, chronograph, chronograph data and alarm functions.

Features:

Altimeter

• 1 meter (or foot) resolution and with working range from -700 meters (-2296 feet) to 9000 meters (29520 feet).
• Graphical expression of changes provided.
• Unit in meters or feet selectable.
• 20 memories with date, time and altitude reading.

Barometer

• 1 hPa resolution and with working range from 300 hpa to 1100 hpa.
• Graphical expression of changes provided.
• Both sea level pressure and absolute pressure can be shown.
• Weather forecast.
• Temperature displayed in °F or °C selectable.

Compass

• Electronic compass providing 16 cardinal indications together with bearing in degrees.
• Declination correction provided.

Time

• 2 time modes selectable.
• Presents day of the week, day, hours, minutes and seconds (year and month can also be set).
• 12/24-hour formats selectable.
• Auto-calendar from 2000 to 2049.

Chronograph

• 1/100-second resolution with working range up to 24 hours.
• 100 memories for lap/split times stored in a maximum of 30 runs.

Alarm

• 2 daily alarms.
• Hourly chime.

Electro-luminescent backlight

- 3 seconds light up EL backlight.

Altimetermode with altitude change: measures every 2,5 seconds

Altimetermode without altitude change (barometer mode): every 2,5 minutes

Barometermode: measures every 2,5 minutes. Changes to Time mode after 24 hours

Temperature: measures every 2,5 minutes.

BASIC OPERATION OF BUTTONS

A: - SWITCH AMONG DISPLAYS

• TAKE BEARING
• STORE ALTITUDE DATA (PRESS AND HOLD)
• FORWARD SELECTION OF ALTITUDE DATA
• START/LAP OF CHRONOGRAPH
• RETRIEVE DATA IN RUN
• TURN ALARM ON AND OFF
• FORWARD SETTING (SET OR CALIBRATION)

B: - SWITCH BETWEEN NORMAL TIME AND DUAL TIME (PRESS AND HOLD)

• SWITCH BETWEEN UNITS OF TEMPERATURE (PRESS AND HOLD)
• SWITCH BETWEEN UNITS OF ALTITUDE (PRESS AND HOLD)
• REVERSE SELECTION OF ALTITUDE DATA
• STOP CHRONOGRAPH
• STORE CHRONOGRAPH DATA (PRESS AND HOLD)
• SELECT RUN NUMBER
• SWITCH BETWEEN ALARM 1 AND ALARM 2
• REVERSE SETTING (SET OR CALIBRATION)

C: - MODE CHANGE

• DIRECT CHANGE TO TIME MODE (PRESS AND HOLD)
• ADVANCE TO NEXT SETTING (SET OR CALIBRATION)

D: - EL BACKLIGHT

• ENTER SET OR CALIBRATION (PRESS AND HOLD)
• CLEAR DATA (PRESS AND HOLD)
• EXIT (SET OR CALIBRATION)

EL BACKLIGHT

Press E for EL backlight with 3 seconds auto light up.

There are 9 modes: Normal Time, Dual Time, Compass, Barometer, Altimeter, Altimeter Data, Chronograph, Chronograph Data and Alarm. Press C to change from mode to mode, hold down B to switch between Normal Time mode and Dual Time mode as in the following:

graph TD
    A["NORMAL TIME"] -->|C| B["COMPASS"]
    B -->|C| C["BAROMETER"]
    C -->|C| D["ALTIMETER"]
    D -->|C| E["ALTIMETER DATA"]
    E -->|C| F["CHRONOGRAPH"]
    F -->|C| G["CHRONOGRAPH DATA"]
    G -->|C| H["ALARM"]
    I["DUAL TIME"] <--|Hold B| A
    style A fill:#f9f,stroke:#333
    style H fill:#f9f,stroke:#333

* At any mode, holding down C will change to Time mode directly.

TIME MODE

Use C to enter Time mode.
* Mode prompt "TIME" is displayed first.
- There are 2 time modes, Normal Time (indicated by T1) and Dual Time (indicated by T2), and they count up
individually with the same second.
- There are 3 displays for time. They are Time, Time with Barometer and Time with Weather.
- There is an auto-calendar from 2000 to 2049.

To switch between Normal Time and Dual Time

Hold down B until the mode indicator (T1 or T2) stops flashing to switch between Normal Time mode and Dual Time mode.

To switch among the 3 time displays

Use A to switch among the 3 displays for time.

* "TIME", "BAROMETER" or "WEATHER" is displayed first.

* Graph of sea level pressure is described in BAROMETER MODE.

To set time

1. Hold down D until the hour digits start to flash on the display, which indicates the setting screen.

2. Use A (+) and B (-) to change the setting. Holding down either button scrolls the setting at high speed.

3. Press C to advance to the next setting as in the following:

graph LR
    A["HOUR MINUTE"] --> B["SECOND YEAR"]
    B --> C["12/24H"]
    C --> D["DAY"]
    D --> E["MONTH"]
    E --> F["CCCC"]

* When second digits are flashing, press A or B to reset the digits to 00. Resetting seconds when the digits are between 00 to 29 will leave the minute digits unchanged, or between 30 to 59 will increase the minute digits by one.

* When 12 or 24 is flashing, press A or B to switch between 12- or 24-hour formats. If 12-hour format is chosen, AM or PM indicator will be shown.

1. Press D to exit the setting screen and day of the week will be adjusted automatically.

* If there is no button operation for 2-3 minutes at setting screen, the display will return to Time mode automatically.

Use C to enter Compass mode.

* Mode prompt "COMP" is displayed first and bearings will be taken automatically.

- Compass mode indicator is shown.

- When you take bearings, readings are shown in 16 cardinal indications together with bearing in degrees.

* Reading shown indicates the direction that the LCD's 12 o'clock position is pointing to.

- North-South arrow is shown on circumference of the LCD.

* North is indicated by 1 flag and South is indicated by 3 flags.

- Declination correction is provided.

* Declination is the difference between true north and magnetic north.

Importance

1. The compass should be calibrated before use.

2. The compass must be kept in a level position when in use.

3. Compass readings are easily affected by disturbing sources of magnetism, so the compass should always be used in the open air.

To calibrate the compass

1. Hold down D until "CAL" is shown on the display, which indicates the calibration screen.

2. Rotate the product clockwise slowly for 2 complete rotations.

* Each rotation must last for at least 15 seconds. Keep the watch in a level position when calibrating. Do avoid close contact to metal parts or other electrical instruments, when calibrating.

1. Press D and the ten-degree digit starts to flash on the display, which indicates the declination angle setting screen.

* Press A will end calibration skipping the declination angle setting. In this case, the declination angle is set to 0 degree.

1. Use A (+) and B (-) to change the setting. Holding down either button scrolls the setting at high speed.

2. Press C to advance to the next setting as in the following:

graph TD
    A["TENS OF DEGREE"] -->|C| B["DEGREE"]
    B -->|E/W| C["End"]

* When E or W is flashing, press A or B to switch between East and West.
* You should consult your local organization for information of declination. Declination angles for major cities are listed below for reference only.

City Declination Angle		City Declination Angle		City Declination Angle
Anchorage	22° E London 4° W	Rio De Janeiro	21° W
Atlanta 4° W	Little Rock 3° E San Francisco 15° E
Bombay 1°	W Livingston, MT		14° E Seattle 19° E
Boston	16° W	Munich	1° E	Shanghai	5° W
Calgary	18° W	New York City	14° W	Toronto	11° W
Chicago	3° W	Orlando	5° W	Vancouver	20° W
Denver	10° E Oslo		2° W Washington DC 10° W
Jerusalem	3° E	Paris	2° W	Waterbury, CT	14° W

1. Press D to end calibration.

* If "ERR" indicating error is displayed, calibrate the compass again.
* If there is no button operation for 2-3 minutes during calibration or at declination angle setting screen, the display will return to Compass mode automatically.

To take bearings

1. Press A, bearings will be taken and shown for about 10 seconds.
   * If no bearing is being taken, the display shows “----”.
2. Hold down A, bearings will be taken and shown continuously and for 10 seconds more after A is released.

BAROMETER MODE

Barometer mode indicator

Use C to enter Barometer mode.

* Mode prompt "BARO" is displayed first.
- Barometer mode indicator is shown.
- The barometer is of 1 hPa resolution and with working range from 300 hpa to 1100 hpa.
- Both sea level pressure and absolute pressure can be shown.
- Graph showing the changes in sea level pressure is provided.
* Graph will be cleared only after battery replacement or reset.
- Weather forecast (indicated by the weather indicators) for the coming 24-48 hours is provided.
* Forecast is accurate only if the barometer has been functioning for at least 12 hours.
- Temperature is of 0.1 degree resolution and with working range from -4°F (-20°C) to 158°F (70°C). And unit in °F or °C selectable.
- There are 3 displays for Barometer mode.

To switch among the 3 displays for barometer mode

Use A to switch among the 3 displays for barometer mode.

graph TD
    A["10:13"] --> B["A"]
    B --> C["10:13"]
    C --> D["A"]
    D --> E["10:13"]

graph LR
    A["Temperature"] --> B["Absolute pressure"]
    B --> C["PM indicator"]
    C --> D["Time"]

Reading the graph of sea level pressure

The graph shows the relative changes in sea level pressure in the past with the current pressure represented on the right. Each horizontal point represents one hour while each vertical point represents the relative reading of pressure in that time.

* It is not possible to get the exact reading from the graph. User can only get the trend of changes from the graph.

To switch between °F and °C

1. Use A to switch to the barometer display with temperature.
2. Hold down B until the unit indicator (°F or °C) stops flashing to switch temperature between °F and °C.

To set sea level pressure reading

1. Hold down D until "SET CURRENT WEATHER" scrolls on the display, which indicates the weather setting screen.
   * The weather indicators start to flash.
2. Press C, "SET SEA LEVEL PRESSURE" scrolls on the display, which indicates reading setting screen.
   * The current sea level pressure reading starts to flash.
3. Use A (+) and B (-) to change the setting. Holding down either button scrolls the setting at high speed.
4. Press D to exit the setting screen.
   * If there is no button operation for 2-3 minutes at setting screen, the display will return to Barometer mode automatically.

To set current weather

1. Hold down D until "SET CURRENT WEATHER" scrolls on the display, which indicates the weather setting screen.
   * The weather indicators start to flash.
2. Use A (+) and B (-) to change the setting as in the following:

graph TD
    A["SET *"] -->|A| B["SET *"]
    B -->|A| C["SET *"]
    C -->|A| D["SET *"]
    D -->|A| E["SET *"]
    E -->|B| B
    B <-->|B| A
    C <-->|B| B
    D <-->|B| C
    E <-->|B| D

B

1. Press D to exit the setting screen.

* If there is no button operation for 2-3 minutes at setting screen, the display will return to Barometer mode automatically.

Use C to enter Altimeter mode.

* Mode prompt "ALTI" is displayed first.

- Altimeter mode indicator is shown.

- The altimeter is of 1 meter (or foot) resolution and with working range from -700 meters (-2296 feet) to 9000 meters (29520 feet).

- Altitude reading in meters or feet selectable.

- Graph showing the changes in altitude is provided.

* Graph will be cleared only after battery replacement or reset.

- Maximum 20 altitude data can be stored.

Reading the altitude graph

The altitude graph shows the relative changes in altitude in the past with the current altitude represented on the right. Each horizontal point represents 15 minutes while each column represents the relative reading of altitude in that time.

* It is not possible to get the exact reading from the graph. User can only get the trend of changes from the graph.

To switch between meters and feet

Hold down B until the unit indicator (M or Ft) stops flashing to switch altitude reading between meters and feet.

To store altitude data

Hold down A until "DATA" stops flashing to store the current altitude data.

* "STORED" and data number are shown.

To calibrate altitude reading

1. Hold down D until the current altitude reading starts to flash on the display, which indicates the setting screen.

2. Use A (+) and B (-) to change the setting. Holding down either button scrolls the setting at high speed.

3. Press D to exit the setting screen.

* If there is no button operation for 2-3 minutes at setting screen, the display will return to Altimeter mode automatically.

ALTIMETER DATA MODE

Use C to enter Altimeter Data mode.

* Mode prompt "ALTI DATA" is displayed first.

- Data number, time, date and altitude reading can be retrieved.

* Altitude data are shown in 2 different displays.

To retrieve the altitude data

Use A (+) and B (-) to select the altitude data to be retrieved.

To clear the altitude data

Hold down D until “----” is shown on the display to clear all altitude data stored.

* Altitude data cannot be cleared individually.

CHRONOGRAPH MODE

Use C to enter Chronograph mode.

* Mode prompt "CHRO" is displayed first.

- The chronograph is of 1/100-second resolution for the first hour and 1-second resolution for the rest and with working range up to 24 hours, then the chronograph stops automatically.

- For the first hour, the chronograph shows minutes, seconds and 1/100-seconds, then it shows hours, minutes and seconds.

* Leading zeros will not be shown.

- There are 100 memories for lap/split times stored in a maximum of 30 runs.

- The chronograph lets you measure elapsed time, lap/split times and two (or more) finishes.

* When you take lap/split times, the display will be frozen to show lap time, split time and lap number for about 6 seconds, then the display will show the current running times automatically.

To measure elapsed time

1. Press A to start the chronograph.

2. Press B to stop the chronograph.

* You can resume the measurement operation by pressing A.

1. Hold down B until the next run number is shown on the display.

* Data of the current run is stored and chronograph is reset to all zeros.

To measure lap/split times

1. Press A to start a time measurement.

2. Press A again when you want to take the first lap/split time.

3. Press A again when you want to take the next lap/split time.

* You may take up to 100 lap/split times by pressing A.

1. Press B to stop the time measurement.

2. Hold down B until the next run number is shown on the display.

* Data of the current run is stored and chronograph is reset to all zeros.

To measure two (or more) finishes

1. Press A to start a time measurement.

2. Press A again when the first runner finishes.

3. Press A again when the second runner finishes.

* You may record the finish time of up to 100 runners by pressing A.

1. Press B when the last runner finishes.

* Time measurement is stopped.

1. Hold down B until the next run number is shown on the display.

* Data of the current run is stored and chronograph is reset to all zeros.

* The finish times for the runners are the split times stored in Chronograph Data mode.

To clear times in current run

1. Press B to stop the chronograph.

2. Hold down D until the chronograph shows all zeros.

* Times in current run are cleared.

CHRONOGRAPH DATA MODE

Use C to enter Chronograph Data mode.

* Mode prompt "CHRO DATA" is displayed first.

- Run number, date, lap/split time of each lap, best lap time and average lap time can be retrieved.

- If chronograph is running, chronograph data cannot be cleared.

To retrieve the chronograph data

1. Use B to select the run to be retrieved.

* Run number and date are shown for about 2 seconds first.

1. Press A to retrieve the data one by one.

* Display examples:

Lap/split time of lap 1

Best lap time
Lap number

Average lap time

To clear one particular run

1. Use B to select the run to be cleared.
2. Hold down D until "CLEAR HOLD ALL" is shown on the display, release D and the selected run will be cleared.

To clear all runs

Hold down D until “----” is shown on the display.

* All runs are cleared.

ALARM MODE

Alarm on indicator

Use C to enter Alarm mode.

* Mode prompt "ALRM" is displayed first.
- There are 2 daily alarms and they can be set to refer to Normal Time (indicated by T1) or Dual Time (indicated by T2).
- Daily alarm sounds at the same time each day, while it is turned on.
- The alarm sounds at the preset time for about 20 seconds, or until you stop it by pressing any button.
- The alarm on indicator is only displayed at the time mode that the alarm is set to refer to.
- Hourly chime sounds at every full hour, while it is turned on.
* If chime is turned on, confirmation sound will be given whenever a button is pressed.

To switch between alarm 1 and alarm 2

Press B to switch between alarm 1 (indicated by AL-1) and alarm 2 (indicated by AL-2).

To set alarm time and turn chime on and off

1. Hold down D until the hour digits start to flash on the display, which indicates the setting screen.

2. Use A (+) and B (-) to change the setting. Holding down either button scrolls the setting at high speed.

3. Press C to advance to the next setting as in the following:

graph TD
    A["HOUR MINUTE"] --> B["C"]
    B --> C["REFER TO T1/T2"]
    C --> D["C"]
    D --> E["CHIME ON/OFF"]

* When TIME 1 or TIME 2 is flashing, press A or B to switch between setting the alarm to refer to Normal Time (TIME 1) and Dual Time (TIME 2).
* When ON or OFF is flashing, press A or B to turn the chime on (indicated by ON) and off (indicated by OFF). If chime is turned on, the chime on indicator will be shown after exiting setting screen.

1. Press D to exit the setting screen.

* The alarm turns on, which is indicated by ON and the appearance of the alarm on indicator.
* If there is no button operation for 2-3 minutes at setting screen, the display will return to Alarm mode automatically.

To turn the alarm on and off

Press A to turn the alarm on (indicated by ON) and off (indicated by OFF).

* If the alarm is turned on, the alarm on indicator will be shown.

RESETTING THE PRODUCT

Hold down A, B, C and D simultaneously, all segments will be "on", then release the buttons and the product will be reset.

* After reset, there will not be any measurement of altitude, pressure or temperature until A or C is pressed.

* After reset, entering Compass mode will change to calibration screen directly.

BATTERY REPLACEMENT

Replace the exhausted battery with a CR2032 cell or equivalent.

Please contact a specialized dealer for battery change. Thereby the sealing ring must not be damaged. No guarantee if the instrument is handled or opened improperly.

Attention: Do not dispose of empty batteries in household waste. Take them to special local collection sites.

CE