7R68 - Montre-bracelet SEIKO - Free user manual and instructions

Product Type	Wristwatch
Brand	Seiko
Model	7R68
Movement Type	Self-winding automatic (Spring Drive)
Caliber Number	7R68
Case Material	Stainless steel
Case Diameter	Approx. 40 mm
Case Thickness	Approx. 12 mm
Weight	Approx. 100 g
Crystal	Sapphire crystal with anti-reflective coating
Water Resistance	10 bar (100 meters)
Crown Type	Screw-down crown
Functions	Time (hours, minutes, seconds), date, GMT by 24-hour hand
Power Reserve	Approx. 72 hours
Accuracy	±1 second per day (Spring Drive accuracy)
Power Source	Self-winding via rotor
Cleaning	Wipe with a soft, dry cloth
Care Instructions	Avoid magnetic fields and strong shocks; service every 3-4 years
Safety Precautions	Do not operate the crown underwater; keep away from children
Spare Parts Availability	Original Seiko parts available through authorized service centers
Repair Service	Contact an authorized Seiko service center
General Information	Grand Seiko Spring Drive GMT automatic watch

Frequently Asked Questions - 7R68 SEIKO

How do I set the time and date on my Seiko 7R68?

Pull the crown out to the first click to set the date, and to the second click to set the time. Rotate the crown in the appropriate direction. For the GMT hand, use the crown when pulling to the second click.

Is the Seiko 7R68 water resistant?

Yes, it is water resistant to 10 bar (100 meters). It is suitable for swimming and snorkeling, but not for scuba diving. Always ensure the crown is fully pushed in or screwed down.

What is the power reserve of the 7R68 movement?

The power reserve is approximately 72 hours when fully wound.

How often should I service my Seiko 7R68?

Seiko recommends servicing the watch every 3 to 4 years to maintain accuracy and water resistance.

What is the accuracy of the Spring Drive movement?

The Spring Drive movement in the 7R68 is accurate to within ±1 second per day.

How do I wind the watch manually?

If the watch has stopped, wind it by turning the crown clockwise (when looking at the watch) about 20 to 30 turns. The movement is also self-winding.

Can I wear the watch while playing sports?

Yes, the watch is robust and shock-resistant, but avoid strong impacts or extreme vibrations.

What type of battery does the Seiko 7R68 use?

The 7R68 is a Spring Drive automatic movement; it does not use a battery. It is powered by the motion of your wrist or by manual winding.

How do I clean the watch?

Wipe the watch with a soft, dry cloth. Avoid using chemicals or abrasives. For the bracelet, use a damp cloth and dry thoroughly.

Where can I get replacement parts or service?

Contact an authorized Seiko service center. Original parts are available through them.

USER MANUAL 7R68 SEIKO

INSTRUCTIONS (P. 21)

ISTRUZIONI (P. 30)

You are now the proud owner of a SEIKO Analogue Watch Cal. 7R68. For best results, please read the instructions in this booklet carefully before using your SEIKO Analogue Watch. Please keep this manual handy for ready reference.

HOW TO WIND THE WATCH 7

TIME/DATE SETTING 8

NOTES ON USING THE WATCH 10

SPECIFICATIONS 11

☆ For the care of your watch, see "TO PRESERVE THE QUALITY OF YOUR WATCH" in the attached Worldwide Guarantee and Instruction Booklet.

SEIKO CAL. 7R68 "SPRING DRIVE"

Until now, quartz and mechanical watches existed as two distinct entities.

Driven by a mainspring, this watch delivers the accuracy of a traditional quartz watch thanks to the use of the Spring Drive Mechanism newly developed by SEIKO.

SPRING DRIVE MECHANISM

- Like a traditional mechanical watch, the mainspring drives the watch. What is new is that it also runs a generator which in turn oscillates a quartz crystal. This regulates the movement of the hands as accurately as a traditional quartz watch.

SWEEP-MOVEMENT SECOND HAND

- The second hand moves smoothly without steps.

POWER RESERVE INDICATOR

- It shows the extent to which the mainspring is wound.

UP TO 48 HOURS OF CONTINUOUS OPERATION

- When the watch is wound fully, it keeps operating for approximately 48 hours.

CAUTION

• This watch is driven by a mainspring. To ensure constant operation of the watch, be sure to wind it completely before the power reserve indicator points to "0".
• If the watch is used in temperatures below 0^ C with the power reserve indicator pointing to “1/4” or less, it may stop operating. Therefore, when using the watch in temperatures below 0^ C, make sure the watch has sufficient power reserve.

a: Normal position ..... Winding the watch by turning clockwise
b: First click .... Date setting
c: Second click ...... Time setting

HOW TO WIND THE WATCH

- Before using, be sure to wind the watch completely by turning the crown.

CROWN

Turn slowly clockwise in the normal position to wind the mainspring.

Turn further until the power reserve indicator points to "1".

CAUTION

- When the power reserve indicator reaches "1", the crown becomes difficult to turn. Do not attempt to turn the crown forcibly. Otherwise, a malfunction will be caused.

TIME/DATE SETTING

- Before setting the time and date, wind the watch completely (as described on the previous page), and check that the watch is in operation.

graph TD
    A["Clock Face at 5"] --> B["Internal Components"]
    B --> C["Step 1: Change from 5 to 6"]
    C --> D["Step 2: Change from 5 to 6"]

CROWN

Pull out to the first click.

Turn counterclockwise until the previous day's date appears.

Pull out to the second click when the second hand is at the 12 o'clock position.

Turn counterclockwise to advance the hands until the date changes to the next.

Turn further to set the time.

Push back in to the normal position.

- Date adjustment at the beginning of the month

The watch indicates dates from "1" to "31". In March and months following 30-day months, you will need to make the following adjustment:

CROWN

Pull out to the first click.

Turn counterclockwise until "1" appears in the calendar frame.

▼ Push back in to the normal position.

NOTES ON USING THE WATCH

HOW TO WIND THE WATCH

- Wind clockwise. The watch is so designed that the mainspring will not be wound by turning the crown counterclockwise.

TIME/DATE SETTING

- Date setting (also for “• Date adjustment at the beginning of the month”)

Do not set the date between 9:00 p.m. and 1:00 a.m. as the date may not change properly. If it is necessary to adjust the date during that time period, first pull out the crown to the second click, turn it counterclockwise until the hands advance past 1:00 a.m., and then, push it back to the first click to set the desired date.

- Time setting

* When setting the hour hand, check that AM/PM is properly set. The watch is so designed that the date changes once every 24 hours.
* The mechanism of this watch is different from that of a conventional quartz watch. To set the time, therefore, first set the hands to a time a few minutes behind the desired time, and then, advance the hands to the exact time. If the hands turn past the desired time, repeat this procedure again.

[Tips for setting the time accurately]

Your watch is equipped with a newly-developed spring drive mechanism. To set the time accurately, please observe the following.

1. Before setting the time, wind the mainspring fully until the power reserve indicator points to "1". If the watch has stopped completely before it is wound up, wind the mainspring fully, allowing the watch to operate for at least 30 seconds, and then set the time.
2. Do not leave the second hand stopped for more than 30 minutes by keeping the crown at the second click. If this should happen, push the crown back in to the normal position, allowing the watch to operate for at least 30 seconds, and then set the time.

SPECIFICATIONS

1 Main functions .... 3 hands (hour, minute and second hands), calendar, and power reserve indicator
2 Frequency of crystal oscillator .... 32,768 Hz (Hz = Hertz ... Cycles per second)
3 Loss/gain (monthly rate) .... Less than 15 seconds at normal temperature range (5°C \~ 35°C) (41°F \~ 95°F) (Corresponding to a daily rate of less than 1 second)
4 Operational temperature range ....- -10°C \~ +60°C (14°F \~ 140°F)

* When using the watch in low temperatures, keep the power reserve indicator above "1/4".

5 Driving system .... Manual winding mechanism
6 Hand movement system .... Sweep-movement second hand
7 Duration of operation ....Approx. 48 hours. (If the watch is fully wound with the power reserve indicator pointing to "1")
8 IC (Integrated Circuit) ...... Oscillator, frequency divider and spring drive control circuit (C-MOS-IC), 1 piece
9 Jewels 30 jewels

* The specifications are subject to change without prior notice for product improvement.