Tudor Black Bay One 31

Tudor Black Bay One 31, reference M79600-0005, has a 31 mm steel case. The case is 9.5 mm thick, and the lug width is 17 mm. The bezel is steel. Calibre MT5201 is a self-winding chronometer movement with a power reserve of approximately 50 hours. A flat sapphire crystal covers the blue dial, which is set with diamonds. The screw-down crown carries the Tudor rose in relief. A steel bracelet with a polished and satin finish and a steel folding clasp is fitted to the watch. Tudor rates the case to 100 metres.