TUDOR watch. Black Bay S&G. Steel case with polished and satin finish. Steel and yellow gold bracelet with folding clasp and safety catch. Domed sapphire crystal. 41mm case. Unidirectional rotating bezel in yellow gold with 60-minute graduated matt black anodised aluminium disc. Black dial, domed. Manufacture Calibre MT5612 (COSC) Self-winding mechanical movement with bidirectional rotor system. Approximately 70 hour power reserve. Yellow gold screw down winding crown. Date. Waterproof to 200M.