Pre-owned Tudor Black Bay GMT ref. 79830RB (2020). Tudor introduced the Black Bay GMT in 2018, adding true travel-watch functionality to one of its most popular collections. While the watch borrows some visual cues from historic Tudor and Rolex GMT models, it’s still distinctly Tudor, thanks to its signature snowflake hands, domed dial, and robust tool-watch design set. The burgundy-and-blue “Pepsi” bezel quickly became a favorite among enthusiasts, creating a vintage-inspired look with an anodized aluminum insert rather than modern ceramic. Housed within the 41mm steel case is Tudor’s in-house MT5652 movement, a COSC-certified caliber with true GMT functionality that allows the local hour hand to be adjusted independently when crossing time zones. With a 70-hour power reserve and 200 meters of water resistance, the Black Bay GMT is every bit as capable as it is attractive. Shop Tudor Black Bay Collection