TUDOR watch. Black Bay Chrono S&G. Steel case with polished and satin finish. Yellow gold pushers. Domed sapphire crystal. 41mm case. Black dial, domed. Fixed yellow gold bezel with matt black anodised aluminium disc with tachymetric scale, yellow gold markings. Brown leather strap with removable bund, with folding clasp and safety catch. Manufacture Calibre MT5813 (COSC) Self-winding mechanical movement with bidirectional rotor system. Approximately 70 hour power reserve. Date.