The Bremont Altitude Perpetual Calendar GMT Mono-Pusher Skeleton

Bremont’s rise has been tied to modern aviation-leaning tool watches with solid mechanics built to be used. After the more experimental Terra Nova pieces, the British brand regrouped around its core strengths with the Altitude collection: a cleaner, aviation-inspired collection that also invited complications. At the top sits the Altitude Perpetual Calendar GMT Mono-Pusher, with an Agenhor-developed module. For Dubai Watch Week 2025, Bremont peels back the dial and puts that movement on show with a new skeletonised edition.

The watch retains Bremont’s signature 42mm Trip-Tick case in grade 2 titanium, combining brushed and polished surfaces with a PVD-coated middle barrel. Thickness remains a manageable 12.65mm, lug-to-lug 49.62mm, and water-resistance is 100m – still very much a proper sports case despite the high complication. A glassbox sapphire crystal tops the watch; a decorated open titanium caseback reveals the movement. The mono-pusher is integrated into the fluted crown, with recessed correctors at 2 and 4 o’clock for the calendar settings.

The big change is on the front side. The solid RAF-blue dial of the launch model is replaced by an openworked blue construction that frames the Agenhor architecture rather than hiding it. Applied numerals and indices are mounted on a skeletonised chapter ring and filled with white Super-LumiNova, maintaining legibility against the busier backdrop.

At 12 o’clock, the domed rotating globe returns, paired with a 24-hour day/night ring for home time. A pointer on a radial scale shows the date at 6 o’clock, while running seconds at 9 o’clock use the lume-tipped two-blade “propeller” hand on a sector-style subdial. The perpetual calendar’s month and leap year indication is at 3 o’clock, with the four-blade propeller hand quietly advancing in 172 micro-steps across the four-year cycle, a very Agenhor way of hiding complexity in plain sight.

The calibre BHC9192 combines the Sellita’s AMT6900 manual base with the exclusive Agenhor module. The combined movement is just 6.8mm thick, runs at 28,800 vibrations/hour with a 50-hour power reserve, and is regulated to -6/+6 seconds per day. The skeletonised layout exposes Côtes de Genève on the bridges and an engraved Wayfinder logo on the mono-pusher lever, small but telling touches that justify opening the dial.

The Skeletonised Altitude Perpetual Calendar GMT Mono-Pusher is delivered with a quick-release titanium bracelet and a quick-release blue patina leather strap. Price is GBP 37,000, and the watch is available through Bremont and authorised retailers. For more information, please visit Bremont.com.