Enhancing the Black Bay with yellow gold creates a version named S&G, for Steel & Gold. TUDOR derived the characteristic aesthetic elements of the Black Bay S&G model from its history. The overall shape, as well as the domed dial and crystal, come from the first TUDOR divers' watches. In this version the lines and proportions of the Black Bay are retained, while the fixed bezel and the winding crown are made from yellow gold. Case: 31mm 316L steel case with polished and satin finish Bezel: Fixed bezel in steel covered by a 0.3mm 18 ct yellow gold cap, set with diamonds Movement: Manufacture Caliber MT5201 (COSC) Self-winding mechanical movement with bidirectional rotor system and Integrated construction Power Reserve: Power reserve of approximately 50 hours Winding Crown: Screw-down winding crown with the TUDOR rose in relief. Steel covered by a 0.1mm 18 ct yellow gold cap Waterproofness: Waterproof to 100 m (330 ft) Dial: Champagne-color with diamond hour markers, flat Crystal: Flat sapphire crystal Bracelet: 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 TUDOR's Guarantee: Five-year transferable guarantee with no registration or periodic maintenance checks required TUDOR Style #: M79613-0007 - Shop the latest TUDOR watches and other jewelry on BlackSkinny.com