Tudor Black Bay Chrono S&G, 41mm steel case with polished and satin finish, black, domed, fixed 18 ct yellow gold bezel with matt black anodised aluminium disc with tachymetric scale, yellow gold markings, manufacture calibre MT5813 (COSC) self-winding mechanical movement with bidirectional rotor system, brown leather with removable bund, with folding clasp and safety catch, domed sapphire crystal, waterproof to 200m (660 ft)