TUDOR watch. Black Bay Chrono. Steel case with polished and satin finish. Riveted 316L steel bracelet with polished and satin finish with folding clasp and safety catch. Domed sapphire crystal. 41mm case. Black dial with silver counters, domed. Fixed 316L steel bezel with matt black anodised aluminium disc with tachymetric scale and silver markings. Manufacture Calibre MT5813 (COSC) Self-winding mechanical movement with bidirectional rotor system. Date. Chronometer. Waterproof to 200M.