Tudor Black Bay One 31

Tudor's Black Bay One 31, reference M79600-0001, has a steel case measuring 31mm across. The case stands 9.5mm thick, with a lug width of 17mm. A flat sapphire crystal covers the anthracite dial, where luminous hands and indices sit alongside a central seconds hand. Inside is the Manufacture Calibre MT5201, a self-winding movement certified as a chronometer, with a power reserve of approximately 50 hours. The screw-down crown carries the Tudor rose in relief. A steel bracelet with a folding clasp completes the watch. It stays water resistant to a depth of 100 metres.