G-Shock GW-1800DJ-1A9 - Manual (Page 54)

E-53
Charging Guide
After a full charge, timekeeping remains enabled for up to about 6 months.
• The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
• For details about the battery operating time and daily operating conditions, see the
“Power Supply” section of the Specifications (page E-65).
• Stable operation is promoted by frequent exposure to light.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day
(5,000 lux)
Indoor Fluorescent Lighting (500 lux)
Approximate Exposure Time
8 minutes
30 minutes
48 minutes
8 hours