Bremont just decided to throw the kitchen sink at a field-ready aviator watch—and somehow made it look easy. The new Altitude Perpetual Calendar GMT Mono-Pusher, limited to just 50 pieces, is a full-on complication bomb wrapped in a titanium case, finished in RAF blue, and actually designed to be worn. Yes, worn. As in, not locked in a vault or babied like some crystal egg with a tourbillon inside.
So What Is It?
Start with a perpetual calendar. Add a GMT. Now wrap that all in a 42mm titanium Trip-Tick case with PVD-coated barrels, finish it with a vertically brushed RAF blue dial, and keep the whole thing under 13mm thick. The dial stays clean and readable, and the complication layout is clever:
- GMT at 12 o’clock, via a globe disc with day/night indicators
- Perpetual calendar split across 3 and 6 o’clock (month/year and date, respectively)
- Running seconds at 9 o’clock, with a mini propeller hand
- Mono-pusher built into the crown for quick timezone jumps
All of this is powered by a custom-built module developed by Agenhor, a super niche movement manufacturer who is working with a high-end manually wound Sellita AMT6900 base calibre. This thing was engineered to survive both airport lounges and actual turbulence.
The Engineering Bit (That You’ll Brag About Later)
The whole complication stack is just 6.8mm thick. With case and crystal, the full watch is 12.65mm, which is wild considering what’s going on inside. Power reserve? 50 hours. Legibility? Surprisingly good, thanks to Super-LumiNova on the hands and well-separated subdials. And yes, those recessed pushers for calendar settings mean no weird case protrusions.
The finishing is proper high-end too—curved sunray patterns on the bridges, Geneva stripes, polished screw heads, engraved logos with ruthenium treatment. The kind of stuff you show to the one watch friend who cares.
A Few Details That Make It Pop
- The GMT display borrows visual cues from Bremont’s Terra Nova Dual-Time Tourbillon, but makes it simpler and more practical
- The month/year subdial is a work of art, using a four-blade hand (one red tip) to mark leap year and month in one go
- The RAF blue dial and case barrel tie into military aviation heritage without looking like cosplay
- The limited run of 50 pieces means you won’t run into another one of these at the next watch meet
The Bottom Line
The Altitude Perpetual Calendar GMT Mono-Pusher is not a showpiece pretending to be a tool watch. It’s a tool watch with genuine horological muscle—and a rare combo of complications you just don’t see together very often. It doesn’t scream “collector bait,” but it’s absolutely one of Bremont’s most advanced pieces to date.
At £33,500, it’s priced to compete with brands that like to call everything “Haute Horlogerie” even if their watches can’t survive a desk drawer. This one can survive takeoff, landing, and probably your next international screwup in a different time zone.
