Charging Time By Environment - Citizen Eco-Drive B872 Instruction Manual

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
14
Illuminance
To work for
(lx)
one day
100,000 2 minutes
10,000 5 minutes
3,000 15 minutes
500 1.5 hours
Charging time (approx.)
To start working
normally when the
cell is discharged
14 minutes
1 hour
3.5 hours
22 hours
To become fully
charged when the
cell is discharged
6 hours
17 hours
53 hours
320 hours