Tudor Black Bay One 31

The Tudor Black Bay One 31, reference M79600-0003, measures 31 mm across in steel with a polished and satin finish. The case stands 9.5 mm thick, with a lug width of 17 mm. A flat sapphire crystal covers the champagne dial, which carries luminous hands and luminous indices along with a central seconds display. The screw-down crown, marked with the Tudor rose in relief, protects the movement, the self-winding manufacture calibre MT5201, a chronometer-certified movement with an approximate 50 hour power reserve. A steel bracelet finished to match the case closes with a folding clasp and safety catch. It stays water resistant to a depth of 100 metres.