Seiko CAL. 5Y75 - Manual (Page 6)

Notes:
1. The charging time required varies with the intensity of light. (Refer to the table in
“CHARGING/RECHARGING INFORMATION”)
2. When the watch is fully charged, it will keep operating for approximately 3 days.
3. It is recommended that you keep the watch charged by exposing it to an appropriate
light source from time to time, rather than letting it run down fully before recharging.
4. The watch is equipped with a system to prevent overcharge. Even if it is further
exposed to light after being fully charged, no malfunction will result.
5. It is recommended that the watch be fully recharged before time setting is attempted.
Charging environment and time required
Sunlight
Fluorescent
light
500 6 hr. 16 hr. 2 hr.
1,000 3 hr. 8 hr. 55 min.
3,000 1 hr. 2.8 hr. 20 min.
Charging Time Required
To maintain
one-day
usage
Sunlight
(Cloudy day)
Sunlight
(Fine day in summer)
Incandes-
cent light
CHARGING/RECHARGING INFORMATION
For full
charge
For one-second
interval
operation
Illumination
(Lux)
Light Source
Distance between
light and watch
Type of light
60W x 1 60 cm (2 ft.)
15W x 2 70 cm (2 ft. 4 in.)
15W x 2 20 cm (8 in.)
5,000 50 min. 1.7 hr. 15 min. 15W x 2 12 cm (5 in.)
10,000 20 min. 1 hr. 8 min. 15W x 2 3 cm (1.2 in.)
10,000 20 min. 1 hr. 8 min.
100,000 3 min. 16 min. 1.5 min.
Most offices 700 5 hr. 10 hr. 1.4 hr.