TUDOR Black Bay 31 S&G

31 mm steel case, Steel and yellow gold bracelet. 31 mm 316L steel case with polished and satin finish. Fixed bezel in yellow gold set with diamonds. Manufacture Calibre MT5201 (COSC) Self-winding mechanical movement with bidirectional rotor system Integrated construction. Black with diamond hour markers. Yellow gold screw-down winding crown with the TUDOR rose in relief. Flat sapphire crystal. Waterproof to 100 m (330 ft). Steel and yellow gold bracelet, polished and satin finish, with steel 'T-fit' folding clasp and safety catch.