7 charging time – CITIZEN U700 User Manual
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Charging the battery
7 Charging time
Below are the approximate values for when exposing the dial to light continuously.
Illuminance
(Lx)
Environment
Time for charging fully
when the battery is
empty (approx.)
Charging time needed for
1-day movement (while
the second hand moves
normally) (approx.)
3,000
20 cm (8 in.) under
a fluorescent lamp
(30 W)
200 hours
40 minutes
10,000
Under cloudy
weather
60 hours
12 minutes
100,000
Under direct
sunlight in summer
30 hours
3 minutes
You can calculate the amount of power the watch can get.
For example, if the battery is charged under cloudy weather for about 4 hours, the
watch will get the power for approx. 20 days.