Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G, reference M79603-0008, has a 31mm steel case with a polished and satin finish. Case thickness measures 9.5mm and the lugs take a 17mm strap or bracelet. A fixed bezel in solid yellow gold frames the champagne dial, which carries diamond hour markers and sits under a flat sapphire crystal. Inside is the self-winding manufacture calibre MT5201, a chronometer-rated movement with a power reserve of around 50 hours. The screw-down crown, capped in yellow gold, adds a further layer of protection. The bracelet combines steel and gold, closed by a folding clasp in the same materials. Tudor rates the case to 100 metres.