TUDOR Black Bay 31 S&G

31 mm 316L steel case with polished and satin finish, Power reserve of approximately 50 hours. Yellow gold screw-down winding crown with the TUDOR rose in relief. Waterproof to 100 m (330 ft). Self-winding mechanical movement with bidirectional rotor system Integrated construction. Silver with diamond hour markers. Steel and yellow gold bracelet, polished and satin finish, with steel “T-fit” folding clasp and safety catch