Citizen Promaster x Eco-Drive ft. Ecozilla Men Casual Round Diver 300m Water Resistant Watch BJ8058-06L BJ8058 BJ-8058 Dive into the world of professional diving with a watch that's as tough as you are. Built for mixed gas diving, this stainless steel timepiece features a luminous dial, 300M water resistance, and a battery-free Eco-Drive technology powered by any light source. Explore the depths with confidence and style. Caliber Number / Movement B873 (solar Eco-Drive) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month) Crystal Mineral crystal (curved, anti-reflective coating) Luminous Luminous on hands, indexes and bezel Case & Band Material Stainless steel case with polyurethane rubber strap Water Resistance 300m / 30 bar scuba diving Case Size Diameter: 48.0 mm Other Specifications Citizen Promaster x Eco-Drive ft. Ecozilla Unidirectional rotating bezel Screw-down crown Screw case back Date display Insufficient charge warning function Overcharge prevention function Regular timekeeping (analog display)