How to charge the battery
Expose the dial to light to charge the watch.
To ensure optimal performance of the watch, make sure that the watch is kept sufficiently charged at all times.
Under the following situations, the energy of the watch is likely to be depleted, resulting in stoppage of the watch:
The watch is concealed under a sleeve.
The watch is used or stored under conditions where it cannot be exposed to light for a long time.
Be careful to make sure that the watch does not get hot when it is charging. (The operating temperature range is -10°C to +60°C.)
When you first start using the watch or starting it after it stopped due to a lack of charge, charge the watch sufficiently using the table on Guide to charging times as a guide.
Guide to charging times
Charge the watch using the times below as a guide.
The figures of “Time required for charging the watch to start moving at one-second intervals” are estimations of time required to charge the stopped watch by exposing it to light until it moves at steady one-second intervals. Even if the watch is partially charged for a shorter period, the watch will resume one-second interval movement. However, it may shortly return to two-second interval movement. Use the charging time in this column as a rough guide for sufficient charging time.
The required charging time slightly varies depending on the model of the watch.
V131
|
Illuminance |
Light source |
Condition (Example) |
Time required for fully charging the watch |
Time required for charging the watch to start moving at one-second intervals |
Time required for charging the watch to last for 1 day |
|---|---|---|---|---|---|
|
700 |
Fluorescent light |
General offices |
- |
16 hours |
1.8 hours |
|
3,000 |
Fluorescent light |
30 W 20 cm |
90 hours |
4 hours |
30 minutes |
|
10,000 |
Sunlight |
Cloudy day |
30 hours |
1.2 hours |
8 minutes |
|
100,000 |
Sunlight |
Sunny day (Under the direct sunlight on a summer day) |
10 hours |
6 minutes |
1 minute |
V145
|
Illuminance |
Light source |
Condition (Example) |
Time required for fully charging the watch |
Time required for charging the watch to start moving at one-second intervals |
Time required for charging the watch to last for 1 day |
|---|---|---|---|---|---|
|
700 |
Fluorescent light |
General offices |
175 hours |
11 hours |
50 minutes |
|
3,000 |
Fluorescent light |
30 W 20 cm |
40 hours |
2 hours |
10 minutes |
|
10,000 |
Sunlight |
Cloudy day |
10 hours |
30 minutes |
3 minutes |
|
100,000 |
Sunlight |
Sunny day (Under the direct sunlight on a summer day) |
3 hours |
6 minutes |
1 minute |
V147 / V157 / V158
|
Illuminance |
Light source |
Condition (Example) |
Time required for fully charging the watch |
Time required for charging the watch to start moving at one-second intervals |
Time required for charging the watch to last for 1 day |
|---|---|---|---|---|---|
|
700 |
Fluorescent light |
General offices |
- |
25 hours |
1.8 hours |
|
3,000 |
Fluorescent light |
30 W 20 cm |
120 hours |
6 hours |
30 minutes |
|
10,000 |
Sunlight |
Cloudy day |
35 hours |
2 hours |
10 minutes |
|
100,000 |
Sunlight |
Sunny day (Under the direct sunlight on a summer day) |
9 hours |
24 minutes |
2 minutes |