Proof 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 a black ion-plated stainless steel case and bracelet, black aluminum bezel with matching black dial and a hint of a red accent, one-way rotating elapsed time and WR200. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Product details: Movement: Eco-Drive Band: Stainless Steel Case Size (mm): 45 Crystal: Mineral Crystal Water resistance: 20 bar Additional functions: 3 Hand; Date Warranty: 5 years Limited Manufacturer Warranty