The Tudor Black Bay Pro Ref. 79470 is a robust, purpose-built traveler’s watch that brings professional-grade GMT functionality to the iconic Black Bay family, housed in a 39mm steel case with a fixed, satin-brushed 24-hour bezel . The domed black dial features Tudor’s signature angular yellow “Snowflake” hand, which indicates a second time zone on the 24-hour scale, while a separate local-time hand can be independently adjusted forwards or backwards via a “jumping hour” mechanism . The date aperture at 3 o’clock is coupled with this local-time hand, automatically adjusting backward if the time is set past midnight—a sophisticated and highly practical feature . Powering this instrument is the in-house Manufacture Calibre MT5652, a COSC-certified self-winding movement with a bidirectional rotor system, providing a 70-hour power reserve . The watch is engineered for durability with a 200-meter water resistance, a screw-down crown, and a domed sapphire crystal . Released in 2022 to instant acclaim for its vintage-inspired design and robust performance, the Black Bay Pro offers a compelling blend of Tudor’s heritage dive-watch aesthetics and modern functionality, making it an ideal companion for exploration and daily wear alike . Key specifications: 39mm steel case; fixed 24-hour steel bezel; black domed dial with yellow GMT hand; Manufacture Calibre MT5652 (COSC) automatic movement; 70-hour power reserve; steel bracelet with T-fit clasp; 200m water resistance; sapphire crystal.