Prove that a dive watch can be fun & functional with the CITIZEN ® ISO-certified 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 with stainless steel case, dark blue polyurethane strap and dark blue dial. With aluminum ring on bezel, 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: Polyurethane Case Size (mm): 44 Crystal: Anti-Reflective Mineral Crystal Water resistance: 20 bar Additional functions: 1/5 Second Chronograph Measures up to 60 Minutes 12/24 Hour Time Date Warranty: 5 years Limited Manufacturer Warranty