Citizen Eco-Drive BN2031-85E Instruction Manual page 17

Charging your watch
Charging time by environment
Below are the approximate charging times when exposing to light continuously.
Please use this table as a reference only.
Environment
Outdoors (sunny)
Outdoors
(cloudy)
20 cm (8 inches)
away from a
fluorescent lamp
(30W)
Interior lighting
16
Illuminance (lx)
To work for one day
3 minutes
100 000
11 minutes
10 000
40 minutes
3 000
4 hours
500
Charging time (approx.)
To start working
normally when the charged when the cell
cell is discharged
2 hours
3.5 hours
8 hours
50 hours
To become fully
is discharged
35 hours
80 hours
280 hours
−