Eco-Drive It starts with a simple, yet revolutionary concept; a timepiece that never needs a battery change.

Citizen Eco-Drive technology harnesses the power of light – from any natural or artificial light source – and converts it into energy which is stored in an Eco-Drive energy cell. It recharges continuously in any kind of light to run forever.

Citizen Eco-Drive History

The watch that never stops, wherever you are. Inventing a technology to ensure watch that never stops anywhere in the world was one of the challenges for CITIZEN.

In 1976, Citizen invented the world’s first light-powered analogue quartz watch that runs using only light as a power source. This technology, now known as “Eco-Drive,” can generate power from any light source, artificial, natural and even dim light to keep watches running without ever replacing batteries.

As a pioneer of the field, Citizen set new challenges to bring forth the full potential of power generation using light.

CITIZEN’s Eco-Drive technology has won acclaim in Japan and other countries for its contribution to environmental protection. In 1996, an Eco-Drive watch was nominated as the first watch to qualify for the Eco Mark, a label managed by the Japan Environment Association (JEA). In 2014, CITIZEN became the first watchmaker to earn a Gold Prize in the JEA’s Eco Mark Awards.

Darkness is not a Concern One of the factors that distinguishes CITIZEN’s Eco-Drive from other methods of keeping watches running at all times is its “power life.” Eco-Drive watches continue running for more than six months* on a full charge, even in total darkness. Thanks to our power saving function, CITIZEN makes it possible to develop watches that can operate for up to seven years without light. *There are exceptions which runs less than six months without light.