Citizen CA0030-52E Eco Drive

Do you know any of the automatic, kinetic, solar powered, and eco-drive technology on watches? I know some watches used these kinds of technology. Some model have their own technology. Rolex uses an Automatic, Seiko uses Kinetic technology, Casio Protrek edition uses tough solar, and Eco-Drive technology is used by Citizen. But there are other model that use the same technology like automatic be used in Seiko 5 too.

In my recent article, I would like to write about an Eco-Drive Technology that is used by Citizen. Eco-Drive is the series name of a line of mainly light powered watches manufactured by the Citizen Watch Co., Ltd. The first Eco-Drive watches were sold in 1995. In other technology, Tough Solar is the name given by Casio to the solar powered battery charging system used in its G-Shock, ProTrek, Pathfinder and other lines of watches. A self-contained, environmentally-friendly solar cell provides a supply of energy to the watch. Spare solar energy is saved in a battery. Normally, the solar cell and rechargeable battery should be able to last as long as the watch.

Light as power source

Most Eco-Drive type watches are equipped with a special titanium lithium ion secondary battery that is charged by an amorphous silicon solar cell located behind the dial.[2] The titanium lithium-ion composition precludes it from being affected from the regular charge/discharge cycle of other types of rechargeable batteries. Light passes through the covering crystal and dial before it reaches the solar cell.[3]

Depending on the electronic movement model, a fully charged secondary power cell could run with no further charging anywhere from 30 days to 3,175 days (8.7 years), though most Eco-Drive men’s watch models offer a six-month power reserve.[4] If kept in the dark for too long, some movement models engage a hibernate mode, where the hands of the watch stop running but the internal quartz movement still keeps track of time. If an ample supply of light is given, the hands move to the proper positions and resume regular timekeeping. Continue reading