Runs even
in dim light

Eco-Drive is designed to charge from ordinary everyday light sources like indoor fluorescent lighting and desk lights. You can go about your everyday life confident that your watch will never stop.

* To get the most out of your watch, set aside about five or six hours per month to charge it in sunlight.

Runs for over six months
even in darkness

Do you need light to generate power for your watch all the time? Not with Eco-Drive. A single full charge is enough to keep Eco-Drive working for over six months in total darkness. Indeed, some models equipped with power save function can run for as long as seven years.