Citizen Promaster x Eco-Drive ft. GMT Men Casual Sports Round Diver 200m Water Resistant Watch BJ7110-11E BJ7110 BJ-7110 Experience the perfect blend of style and practicality with the Citizen Promaster Diver, designed for both fun and functionality. This ISO-compliant dive watch utilizes Eco-Drive technology, harnessing light for power without the need for batteries. Featuring a durable super titanium case, sapphire crystal, and a black polyurethane strap, it offers dual time display, 12/24-hour time, date function, and a water resistance of 200M, all powered by Caliber B877. Caliber Number / Movement B877 (solar Eco-Drive) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month) Crystal Sapphire crystal with magnifier Luminous Luminous on hands, indexes and bezel Case / Band Material Titanium case with polyurethane rubber strap Water Resistance 200m / 660ft diver Case Size Diameter: 43.0 mm Other Specifications Citizen Promaster x Eco-Drive ft. GMT Screw-down crown Screw case back Date, dual time and 24-hour display Insufficient charge warning function Overcharge prevention function Regular timekeeping (analog display)