Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G, reference M79603-0005, has a 31 mm steel case. The case is 9.5 mm thick, with a 17 mm lug width. A flat sapphire crystal covers the champagne dial, and the fixed bezel is solid yellow gold. Calibre MT5201 is a self-winding chronometer movement with a power reserve of approximately 50 hours. The screw-down crown is steel with a yellow gold cap. A steel and gold bracelet is fitted, closed by a folding clasp in steel and gold. Tudor rates the case to 100 metres.