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: Citizen Nighthawk
This Citizen Promaster Nighthawk BJ7010-59E is an another great eco drive watch. This watch 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 […]
The watch is in Citizen’s famous Eco-Drive category, meaning that the face containing solar cell. Wearing the watch in daylight keeps the batteries charged for several months. It’s basically a zero-maintenance watches no batteries, no winding, etc. You can’t even tell the face is a solar cell — it appears solid black, even up-close. The […]