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9. 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.
Illuminance
Environment
(lux)
Inside an ordinary office
500
60-70 cm (24-28 in.) under
1,000
a fluorescent lamp (30 W)
20 cm (8 in.) under a
3,000
fluorescent lamp (30 W)
Outdoors, cloudy
10,000
weather
Outdoors, summer,
100,000
under direct sunlight
20
Charging time
Charging time to level 1 (1-
required for 1 day of
second interval movement)
operation
from stopped state
3.5 hours
40 hours
2 hours
18 hours
35 minutes
6 hours
11 minutes
2 hours
2 minutes
25 minutes
* Charging time refers to the amount of time the watch
is continuously exposed to light.
Charging time
Charging time to level 2
from stopped state
100 hours
30 hours
5.5 hours
Charging time for 1 day of operation:
Charging time to level 3
Time required for charging the
(fully charged) from
stopped state
watch to run for 1 day at 1-second
interval movement.
Full charging time:
Time required for charging the
watch from the stopped state to
ully charged.
150 hours
Level 1: The watch is not charged
45 hours
8.5 hours
sufficiently for one-second
interval movement.
Charge the watch at least to
level 2.
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