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. Caliber number E168.