The Tudor Black Bay GMT features a robust 41mm steel case with polished and satin finishes, housing the Manufacture Calibre MT5652, a COSC-certified self-winding mechanical movement with a bidirectional rotor and approximately 70 hours of power reserve. Its steel screw-down crown is detailed with the Tudor rose, ensuring water resistance up to 200 meters. The bidirectional rotatable bezel includes a 24-hour graduated anodized aluminum disc in burgundy and blue, complemented by a domed opaline dial with galvanic finish and sapphire crystal. This timepiece comes with a five-year transferable guarantee requiring no registration or maintenance checks.