Citizen Promaster x Eco-Drive ft. Orca Men Casual Formal Round Diver 200m Water Resistant Watch BN0231-52L BN0231 BN-0231 Dive into style with a timepiece inspired by the majestic Orca whale. This sporty, functional watch features a silver-tone stainless steel case, blue dial, and advanced dive features like anti-magnetic and anti-shock resistance. Powered by sustainable Eco-Drive technology, it's perfect for serious divers and collectors alike. Caliber Number / Movement E168 (solar Eco-Drive) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month) Crystal Mineral crystal (curved) Luminous Luminous on hands and indexes Case / Band Material Stainless steel case with metal band (three-fold clasp with secure lock, push-button release with slide extender) Water Resistance 200m / 660ft diver Case Size Thickness: 14.6 mm Diameter: 46.5 mm Other Specifications Citizen Promaster x Eco-Drive ft. Orca Unidirectional rotating bezel Screw-down crown Screw case back Date display Insufficient charge warning function Overcharge prevention function Regular timekeeping (analog display)