Citizen Promaster x Eco-Drive ft. Profesional Ecozilla Men Diver Round 300m Water Resistant Watch BN1024-01E BN1024 BN-1024 Discover cutting-edge diving technology with the Citizen Promaster Eco-Drive Professional Diver 300m. This advanced watch features the E365 caliber, providing a 365-day power reserve. Designed for saturation diving, it includes a helium valve and 300m water resistance. Inspired by its predecessor, it showcases a glossy deep-sea dial and a durable, eco-friendly BENEBiOL bracelet, combining functionality with sustainability. Caliber Number / Movement E365 (solar Eco-Drive) Power Reserve / Accuracy Approximately 365 days 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 urethane rubber strap Water Resistance 300m / 1,000ft diver Case Size Thickness: 16.0 mm Diameter: 46.0 mm Other Specifications Citizen Promaster x Eco-Drive ft. Profesional Ecozilla Unidirectional rotating bezel Screw-down crown Screw case back Date display Insufficient charge warning function Overcharge prevention function Regular timekeeping (analog display)