Tudor Black Bay One 39

Tudor's Black Bay One 39, reference M79660-0002, has a 39 mm steel case. The case is 12 mm thick, with a 21 mm lug width, and Tudor rates it to 100 metres. A flat sapphire crystal covers the blue dial, and the bezel is steel. The movement is Manufacture Calibre MT5602, a self-winding calibre with a bidirectional rotor system and a power reserve of approximately 70 hours. The watch is a chronometer, and the crown is screw-down. The bracelet is steel with a polished and satin finish. The clasp is a steel T-fit folding clasp with a safety catch.