Citizen C660 User Manual

1
Please charge the watch fully before use
by exposing it to light.
When the watch does not operate according to the
instruction manual, it is insufficiently charged.
Charge the watch for at least 3 hours approximately
20 cm (8 in) away from a fluorescent or incandescent
lamp (30 W) as a light source. When charging, do
not place the watch too close to the light source to
prevent the watch from becoming too hot.
* When charging the watch under direct sunfight,
charge for at least 50 minutes.
English

Citizen C660 Specifications

Operating Environment

accuracy	±15 seconds per month
operating temperature range	0°C to +55°C
normal operating temperature range	+5°C to +35°C

Battery

battery type	Secondary battery
fully charged running time	Roughly 4 years
two-second interval running time	Roughly 1.5 days