Tudor Black Bay One 39

Tudor's Black Bay One 39, reference M79660-0005, has a 39 mm steel case. The case is 12.0 mm thick, with a 21 mm lug width and a steel bezel. A flat sapphire crystal covers the blue dial, which is set with diamonds. The movement is the self-winding calibre MT5602, a chronometer with a power reserve of approximately 70 hours. The watch has a screw-down crown. Tudor rates the case to 100 metres. The bracelet is steel with a polished and satin finish, and the watch has a steel folding clasp.