Seiko SRPA82K1 Men Prospex Automatic Diver’s 200M Watch. Japan made automatic movement, Caliber 4R36. Hand-winding capability. Power reserve approximately 41 hours. Stainless steel case with black hard coating and ceramic. Unidirectional rotating bezel. Screw case back. Screw-down crown. Black urethane strap. Black dial with luminous hands and indexes. Day-date display at 3 o’clock position. Hardlex glass. Water resistance: 200M diver. Approximate case diameter: 51.7mm.