6. General Reference for Charging Times
The time required for charging varies according to the model of the watch (color of the
dial, etc.). The following times are shown below to serve only as a reference.
* Charging time refers to the amount of time the watch is continuously exposed to light.
Illuminance
(lux)
500
Environment
Inside an ordinary office
Charging time
4 hours 40 hours
Approx. charging
time from the
stopped state until
1-second interval
movement
Approx. charging
time from the
stopped state until
fully charged
-----
1,000
60-70 cm (24-28 in) under a
fluorescent lamp (30 W)
2 hours 18 hours
-----
3,000
20 cm (8 in) under a
fluorescent lamp (30 W)
40 minutes 6 hours 120 hours
10,000
Outdoors, cloudy weather
11 minutes 2 hours 35 hours
100,000
Outdoors, summer, under
direct sunlight
3 minutes 16 minutes 12 hours
Approx. charging
time for 1 day of
operation
Full charging time: Time required for charging the watch from the stopped state to fully charged.
Charging time for 1 day of operation: Time required for charging the watch to run for 1 day at 1-second
interval movement.
20 21
[Note]
• Once fully charged, the watch will continue to run for about 6 months with any
additional charging. As shown in the table above, a considerable amount of time is
required until the watch starts running once the watch has stopped as a result of
being insufficiently charged. Try to keep your watch sufficiently charged at all
times by charging everyday.
Furthermore, it is recommended to charge your watch by exposing to direct sunlight
once a month.
