Citizen Eco-Drive watches are driven by an ingineous Solar conversion panel and energy cell. They are able to use light from any source providing for a limitless and free energy supply to drive the mechanism. The absence of any complex moving power generating machinery is another advantage making this watch absolutely maintenance-free. ... read more

The light energy is converted to electricity by means of a a microns thin disc of amorphous silicon positioned under the dial. The electrical energy produced through the photovoltaic process is stored in a special storage cell. The revolutionary charging system allows for a great variety of attractive dials which can be used with the Solar conversion panel .

The produced electricity is stored in a special Eco-Drive energy storage cell. The design of the cell prevents its deterioration from the regular charge/discharge cycle as with an ordinary battery. With normal care and exposure to light the watch is provided with a lifetime of reliable and trouble free power. The energy cell is free from any contaminating chemicals used in ordinary batteries.