Altitude Perpetual Calendar GMT

At the pinnacle of Bremont’s Altitude Collection stands the Perpetual Calendar GMT Mono-pusher — a rare and refined timepiece limited to just 50 pieces worldwide. Housed in a lightweight 42mm Trip-Tick titanium case, with a brushed ‘Air Force Blue’ dial and case barrel, this watch combines two prestigious complications in a design rooted in aviation utility and everyday wearability.

Inside, a hand-wound BHC9192-MH calibre forms the base, with a bespoke perpetual calendar and GMT module developed exclusively with Geneva’s renowned atelier, Agenhor. The display is beautifully balanced, with a rotating globe at 12 o’clock indicating a second time zone, and subdials at 3, 6, and 9 o’clock presenting the month/leap year cycle, date, and running seconds respectively. Despite its mechanical complexity, all functions are easily adjusted via an integrated mono-pusher crown and discreet correctors. 

Crafted to deliver enduring performance and refined precision, the Altitude Perpetual Calendar GMT is finished with a glassbox sapphire crystal and is offered on both a titanium bracelet and patinated blue leather strap. A showcase of British design, Swiss horological mastery and high complication craftsmanship — built for those who appreciate the rare and exceptional.