41 mm steel case with polished and satin finish Manufacture Calibre MT5813 (COSC) Self-winding mechanical movement with bidirectional rotor system Power reserve of approximately 70 hours Yellow gold screw-down winding crown with the TUDOR rose in relief Yellow gold screw-down pushers at 2 and 4 o'clock Waterproof to 200 m (660ft) Fixed yellow gold bezel with matt black anodised aluminium disc with tachymetric scale, yellow gold markings Champagne-colour with black counters, domed Domed sapphire crystal Riveted steel and yellow gold bracelet, polished and satin finish, with folding clasp and safety catch