This Citizen Nighthawk is powered not by an ordinary battery, but by converting photo energy to electrical energy. A secondary battery is used in this watch to store electrical energy. This secondary battery is a clean energy battery which doesn’t use any toxic substances such as mercury. Once fully charged, the watch will continue to […]
Tag Archives: Pilot Watch
This Citizen promaster eco drive watch is a combination solar-powered watch that contains a solar cell in its face that drives the watch hands, alarm, chronograph, timer and numerous other functions by converting light energy into electrical energy. It is also equipped with convenient functions including three power save modes that reduce power consumption when […]