TUDOR Black Bay One 31 Steel

31mm steel case with polished and satin finish. anthracite dial. Screw-down crown with the TUDOR rose in relief. Waterproof to 100m (330 ft). Manufacture Calibre MT5400 (COSC) Self-winding mechanical movement with bidirectional rotor system. Power reserve of approximately 50 hours. Stainless steel bracelet, polished and satin finish, with “T-fit” folding clasp and safety catch