Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G, reference M79613-0005, has a 31 mm steel case. The case is 9.5 mm thick, with a 17 mm lug width. Tudor rates the case to 100 metres. A flat sapphire crystal covers the black dial. The fixed bezel is solid yellow gold, set with diamonds. The movement is the self-winding Manufacture Calibre MT5201, a chronometer with a power reserve of approximately 50 hours. The screw-down crown is steel with a yellow gold cap. A steel and gold bracelet has a folding clasp, also in steel and gold.