Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G, reference M79603-0007, has a 31mm steel case with a polished and satin finish. Case thickness is 9.5mm, with a lug width of 17mm. A flat sapphire crystal sits over a silver dial, and the watch is set with diamonds. The hands and indices carry luminous treatment for legibility in low light. The fixed bezel is solid yellow gold. Inside is the self-winding manufacture Calibre MT5201, a chronometer with approximately 50 hours of power reserve, paired with central seconds and a screw-down crown. The bracelet combines steel and gold links and closes with a steel and gold folding clasp. Tudor rates the case to 100 metres.