Inventing a technology to ensure watch that never stops anywhere in the world was one of the challenges for CITIZEN.
In 1976, we invented the world’s first light-powered analog 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.
Watches Powered by Light
Eco-Drive is designed to convert both natural and artificial light into energy to power watches. Watches with Eco-Drive do not require any battery replacement, charging or winding to maintain constant operation.
Light-Powered Generation
Eco-Drive efficiently converts any light, including artificial, natural and even dim light, into energy. CITIZEN has focused its development efforts on two different types of solar cells.
