Citizen Promaster x Eco-Drive ft. Dive Men Diver Round 200m Water Resistant Watch BN0266-07E BN0266 BN-0266 Citizen Promaster Marine divers powered by the new Eco-Drive Caliber E118 with a one-year power reserve. Featuring a 40.6mm stainless steel case, unidirectional bezel, sapphire crystal with anti-reflective coating, and 200m water resistance. Includes magnetic resistance, luminous hands and markers, screw-down crown, and date display. Caliber Number / Movement E118 (Eco-Drive aka solar powered) Power Reserve / Accuracy Approximately 12 months when fully charged (+/-15 seconds per month) Crystal Sapphire crystal (anti-reflective coating) Luminous Luminous on hands, indexes and bezel Case / Band Material Stainless steel case with rubber (polyurethane) strap Water Resistance 200m / 660ft diver Case Size Thickness: 11.7 mm Diameter: 40.6 mm Length: 47.8 mm Lug width: 20.0 mm Other Specifications Citizen Promaster x Eco-Drive ft. Dive Unidirectional rotating bezel Screw-down crown Screw case back Overcharge prevention function Insufficient charge warning function Date display Regular timekeeping (analog display)