Tudor Black Bay One 39 S&G

The Tudor Black Bay One 39 S&G, reference M79663-0001, has a 39mm steel case with polished and satin finish. Case thickness measures 12mm and the lug width is 21mm. A fixed bezel in steel is capped with yellow gold, and the black dial sits under a flat sapphire crystal. The self-winding Manufacture Calibre MT5602 is a COSC-certified chronometer with a power reserve of approximately 70 hours. Central seconds and luminous hands and indices complete the dial layout. The steel and gold bracelet closes with a TUDOR "T-fit" folding clasp with safety catch, its logo in solid yellow gold. The screw-down crown, capped in yellow gold, holds the case to its 100 metre rating.