Tudor Black Bay One 39

Tudor's Black Bay One 39, reference M79660-0004, has a 39 mm steel case. The case is 12 mm thick with a 21 mm lug width, and the bezel is steel. Tudor rates the case to 100 metres. Calibre MT5602 is self-winding, with a bidirectional rotor and a power reserve of approximately 70 hours. The movement is COSC chronometer certified. A flat sapphire crystal covers the grey dial, which is set with diamonds. The screw-down crown carries the Tudor rose in relief. The steel bracelet has a T-fit folding clasp with a safety catch.