Five year guarantee. 42 mm steel case with polished finish, open back with sapphire crystal. Manufacture Calibre MT5641 (COSC) Self-winding mechanical movement with bidirectional rotor system. Power reserve of approximately 70 hours. Steel screw-down winding crown with the TUDOR logo. Waterproof to 100 m (330 ft). Steel double bezel with polished finish. Black-colour dial with rhodium-plated hour markers, small seconds at 6 o'clock. Domed sapphire crystal. Steel and yellow gold bracelet, 5 rows, polished centre links with folding clasp and steel safety clasp.