The ultimate pilot’s tool watch, the Altitude Chronograph GMT pairs a blue dial with a 904L steel case and black DLC coated centre barrel, mission ready for exploration, travel, and demanding environments, presented on a matching steel bracelet. It is powered by the automatic, chronometer rated BC781AC calibre, with 25 jewels, beating at 28,800 bph (4Hz) and offering a 62 hour power reserve.