Tudor Black Bay One 31

The Tudor Black Bay One 31, reference M79600-0002, has a 31 mm steel case. The case is 9.5 mm thick and has a steel bezel. The lug width is 17 mm. The movement is the self-winding Manufacture Calibre MT5201, with a power reserve of approximately 50 hours. A flat sapphire crystal covers the blue dial. The watch is a chronometer with a screw-down crown. Tudor rates the case to 100 metres. A steel bracelet with a polished and satin finish is fitted to the watch, and it has a steel folding clasp.