Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G, reference M79613-0006, has a 31 mm steel case. The case is 9.5 mm thick and has a 17 mm lug width. Tudor rates the case to 100 metres. A flat sapphire crystal covers the silver dial. The watch is set with diamonds and has a fixed bezel. The crown is a screw-down type. Inside is the self-winding calibre MT5201, a chronometer with a power reserve of approximately 50 hours. The watch comes on a steel and gold bracelet with a steel and gold folding clasp.