Black Bay 31 S&G

31 mm 316L Steel case with polished and satin finish. The movement is manufacture calibre MT5201 (COSC) and self-winding mechanical movement with bidirectional rotor system and integrated construction. Power reserve of approximately 50 hours and this watch is 100 m (330 ft) waterproof. This watch has a Yellow Gold screw-down winding crown with the TUDOR rose in relief and Steel covered by a 0.1mm 18 ct Yellow Gold cap. Includes a fixed bezel in Steel covered by a 0.3mm 18 ct Yellow Gold cap set with diamonds, a Black dial with diamond hour markers, flat and sapphire crystal. The bracelet includes Yellow Gold center links at 6 and 12 o'clock. Remaining center links in steel covered by a 0.2mm 18 ct Yellow Gold cap. "T-fit" folding clasp with safety catch. The logo on the catch is made of Yellow Gold. In 2017, TUDOR introduced a new steel and gold version to the famous Black Bay family, featuring for the first time a new date function.