Seiko Watch User Manual

Table of Contents

• Properties
• How to Charge and Start the Watch
• Setting Time/Calendar
• Charging Time/Accuracy Guide
• Low Power Warning Function
• Power Source Memo
• How to Operate the Screw-Lock Crown
• Rotating Bezel
• Specifications

Properties

• Operates on solar energy.
• No battery replacement needed (refer to "Power Source Memo" on page 101).
• Maintains operability for 2-12 months after full charge (depending on caliber).
• Low Power Warning Function (for calibers V111, V117, V137, V145, V147, V157, V158, V181, V182, V187).
• Instant Start Function (for calibers V145, V147, V157, V158, V181, V182, V187).
• Overcharge Prevention Function.

Your Watch Caliber Number

Identify your watch's caliber number, which is indicated on the case back. As shown in the diagram on the right, the caliber number is the 4-digit number to the left of the hyphen.

[Diagram description: The diagram shows a watch case back with the caliber number "V145-0A00" highlighted. "V145" is indicated as the caliber number.]

Calibers: V110, V111, V114, V115, V116, V117, V137, V145, V147, V157, V158, V181, V182, V187

How to Charge and Start the Watch

If the watch has stopped or if the rechargeable battery's charge is very low, charge the watch sufficiently by exposing it to light.

Instant Start Function

If the watch is exposed to sunlight or strong artificial light (over 1000 lux), it will start immediately, with the second hand moving at 2-second intervals.

[Diagram description: The diagram shows a watch face. Step 1: Place the watch under sunlight or strong artificial light. The second hand is shown moving with a 2-second interval. Step 2: Keep the watch in light until the second hand moves at a 1-second interval. Step 3: Once the watch has started after a complete stop, set the date and time before wearing it on your wrist. Refer to "Charging Time / Accuracy Guide".]

Notes:

1. If your watch has a second hand, after activating the instant start function by exposing it to light, the second hand will immediately move at 2-second intervals, but the rechargeable battery's stored energy is insufficient. The watch may stop if removed from light.
2. It is not necessary to fully charge the watch. However, it is important to charge it well, especially for the initial charge.

Precautions for Charging

WARNING:

• When charging, do not place the watch too close to camera flashes, spotlights, incandescent lamps, or other light sources, as this may cause excessive temperature rise and damage internal components.
• When charging the watch under sunlight, do not leave it on car dashboards, etc., as this may cause excessive temperature rise.
• When charging the watch, ensure the watch temperature does not exceed 50°C (for calibers V110, V145, V181, V182).
• When charging the watch, ensure the watch temperature does not exceed 60°C (for calibers V111, V114, V115, V116, V117, V137, V147, V157, V158, V187).

Setting Time/Calendar

Models with 2/3 Hands

1. Pull out the crown to the first click.
2. Turn the crown to set the desired time.
3. Push the crown back to its normal position (in accordance with the time signal for 3-hand models).

Models with Date

1. Pull out the crown to the second click and set the preceding date.
2. Pull out the crown to the second click when the second hand points to the 12 o'clock position.
3. Set the desired date by turning the crown.
4. Set the hour and minute hands to the desired time by turning the crown.
5. Push the crown back to its normal position in accordance with the time signal.

Models with Day and Date

1. Pull out the crown to the first click and set the preceding day and date.
2. Pull out the crown to the second click when the second hand points to the 12 o'clock position.
3. Turn the crown until the desired day and date appear in the window on the dial.
4. Turn the crown to set the minute and hour hands to the desired time.
5. Push the crown back to its normal position in accordance with the time signal.

Charging Time/Accuracy Guide

Notes:

• Do not set the date between 9:00 p.m. and 1:00 a.m. Otherwise, the date may not change correctly. If you need to set the date during this interval, first set the time to any time outside this interval, set the date, and then reset the correct time.
• When setting the hour hand, ensure the AM/PM is correctly set. The watch is designed so that the date changes once every 24 hours. Turn the hands past the 12 o'clock mark to determine if the watch is set to AM or PM. If the date changes, it is AM. If the date does not change, it is PM.
• When setting the minute hand, first set it 4-5 minutes past the desired time, then move it back to the exact time.
• The date needs to be corrected at the end of February and for 30-day months.

A: Charging time required for 1 day of watch operation.
B: Time required for continuous operation.
C: Time required for full charge.

The above table provides only a general guide.

A: Charging time required for 1 day of watch operation.
B: Time required for continuous operation.
C: Time required for full charge.

The above table provides only a general guide.

Low Power Warning Function

If the watch has a second hand, when the energy stored in the rechargeable battery drops to an extremely low level, the second hand will start moving at 2-second intervals instead of the normal 1-second interval (some calibers do not have this function). The watch continues to display the correct time even when the second hand moves at 2-second intervals.

In such cases, charge the watch as soon as possible by exposing it to light. Otherwise, the watch may stop approximately 3 days later. (For charging the watch, refer to "How to Charge and Start the Watch").

To Prevent Power Depletion

• When wearing the watch, ensure it is not covered by clothing.
• When the watch is not in use, place it in a brightly lit location for as long as possible.

Power Source Memo

This watch uses a rechargeable battery, which differs from ordinary silver-oxide batteries. Unlike disposable batteries such as dry cells or coin cells, this rechargeable battery can be used repeatedly through charge/discharge cycles.

The effective recharging capability of the rechargeable battery may gradually deteriorate due to various causes, such as long-term use or operating conditions. Worn-out or contaminated mechanical parts or decomposed oils can also shorten the recharge cycles. If the rechargeable battery's effectiveness decreases, the watch requires repair.

WARNING:

• Do not attempt to replace the rechargeable battery yourself. Battery replacement requires professional knowledge and skills. Please consult a watch shop for battery replacement.
• Installing an ordinary silver-oxide battery may cause overheating, which could lead to a fire.

How to Operate the Screw-Lock Crown (For models with a screw-lock crown)

• To unscrew the crown: Turn the crown counter-clockwise (then pull out the crown to set the time/calendar).
• To screw in the crown: With the crown in its normal position, turn it clockwise while pushing it in.

Rotating Bezel (For Models with Rotating Bezel)

The rotating bezel can indicate up to 60 minutes of elapsed time.

1. Turn the rotating bezel to align its marker [e.g., a triangle or dot] with the minute hand.
2. Read the elapsed time from the rotating bezel marker that the minute hand points to.

[Diagram description: The diagram shows a watch face with a rotating bezel. The bezel's marker is aligned with the minute hand. The minute hand then moves forward, indicating elapsed time on the bezel markers.]

Note: In some models, the rotating bezel rotates only counter-clockwise.

Specifications

Specifications are subject to change without prior notice for product improvement.