TUDOR Black Bay One 31 Steel

31mm stainless steel case with polished and satin finish. Waterproof to 100m (330 ft). Stainless steel bezel with polished and satin finish. Blue dial with 8 diamonds. Manufacture Calibre MT5201 (COSC) Self-winding mechanical movement with bidirectional rotor system. Integrated construction. Power reserve of approximately 50 hours. Stainless steel bracelet, polished and satin finish, with “T-fit” folding clasp and safety catch