Citizen Eco-Drive Promaster Diver ISO Compliant - Black Dial - Rubber StrapProof that a dive watch can be fun & functional with the CITIZEN ISO compliant Promaster Diver. With Eco Drive technology, it is powered by light and never needs a battery, so you'll never need to open your caseback or compromise your dive again. Featured in black polyurethane strap, stainless steel with bold black aluminum bezel and matching black dial, one way rotating elapsed time and WR200. ISO Compliant Stainless steel case Citizen Eco Drive