Tudor Black Bay One 39

Tudor's Black Bay One 39, reference M79660-0005, has a 39mm steel case measuring 12mm thick. A screw-down crown with the Tudor rose in relief secures the case, and a flat sapphire crystal covers the blue dial, which is set with diamonds. The movement is the manufacture calibre MT5602, a self-winding chronometer with a power reserve of around 70 hours. Central seconds run alongside luminous hands and indices for legibility. The 21mm lug width takes a steel bracelet finished in polished and satin steel, closed with Tudor's T-fit folding clasp and safety catch. It stays water resistant to a depth of 100 metres.