Tudor Black Bay Chrono S&G, 41mm steel case with polished and satin finish, champagne-colour with black counters, 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, yellow gold center links at 6 and 12 o’clock, remaining center links in steel covered by a 0.2mm 18 ct yellow gold cap. folding clasp and safety catch, domed sapphire crystal, waterproof to 200m (660 ft)