Citizen AT8260-18A Instruction Manual page 16

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Charging time by environment
Below are the approximate times required for charging when exposing the watch
dial to light continuously. Please use this table as a reference only.
Environment
Outdoors (sunny)
Outdoors (cloudy)
20 cm (7-7/8 inches)
from a fluorescent
lamp (30W)
Interior lighting
Maximum run time from full charge: Approx. 6 months (in normal operation),
approx. 10 months (with power save feature)
Illuminance
To work for one
(lx)
day
100,000 5 minutes
10,000 11 minutes
3,000 40 minutes
500 4 hours
Charging your watch
Charging time (approx.)
To start working
normally when the
cell is discharged
2 hours
2 hours
3.5 hours
15 hours
To become fully
charged when the
cell is discharged
30 hours
40 hours
130 hours
920 hours
15