The Tudor Black Bay Yellow Gold & Steel Diamond Black Dial 31mm Ref. M79613-0005 delivers technical reliability and a sophisticated two-tone look in a compact design. Released in 2022, this model features a 31mm stainless steel case with polished and satin finishes, matched with a solid yellow gold bezel set with diamonds. The black dial is accented by diamond hour markers, offering both legibility and a distinct visual signature, under a flat sapphire crystal. Powered by the COSC-certified Manufacture Calibre MT5201, the watch provides a 50-hour power reserve, self-winding performance, and chronometer accuracy. The screw-down crown, in steel and capped with yellow gold, is detailed with the Tudor rose and ensures water resistance up to 100 meters. The two-tone bracelet blends steel and yellow gold, finished with the Tudor “T-fit” folding clasp and a solid gold logo. This reference stands out for its diamond bezel, reliable movement, and compact profile.