HIGHLY EXCLUSIVE LIMITED EDITION
Altitude Perpetual Calendar GMT
- Regular price
- £33,500.00
- Regular price
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- Sale price
- £33,500.00
Hand built to order. Estimated dispatch in 10 - 12 weeks. We will contact you directly if for any reason delivery may take longer.
Hand-wound, 42mm, Titanium
A rare fusion of high horology and aviation design. Limited to just 50 pieces.
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Delivery & Returns
GENERAL
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- As part of our commitment to delivering exceptional quality, some watches are individually hand built upon order. This means your timepiece may have a delivery lead-time. You can find details about this and what to expect on each product page
- Tracking is available for all shipping services. Please allow up to 7 days for tracking information to be available for European and International orders
UNITED KINGDOM
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- Free delivery on all orders
- Please allow 1-2 working days for delivery after dispatch
- Most orders are dispatched within 2 working days, unless a lead-time is specified
- Shipping via DPD or DHL for watches and Royal Mail Tracked 24 for accessories
EUROPE
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- Free delivery on orders over €100
- Please allow 7-10 working days for delivery
- No additional charges; import duties and taxes are covered
- Shipping via DHL with trusted and renowned Bremont partner Care of Carl in Sweden
REST OF WORLD
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For delivery to the United States and Australia, please visit us.bremont.com and au.bremont.com, respectively.
- Free delivery on orders over £2000
- Please allow 7-10 working days for delivery
- No additional charges; import duties and taxes are covered
- Shipping via DHL
Learn more about our delivery policy
RETURNS
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You must notify Bremont of your intention to return an item within 30 days of receipt. Conditions apply.
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UP TO 5-YEAR WARRANTY
At Bremont, we’re proud to build watches that Take It Further. And our International Warranty goes further too.
All Wayfinder logo timepieces from April 2024, including those from our 2025 Altitude Collection, are eligible for an extended warranty from 3 to 5 years, offering added peace of mind for the journey ahead.
Registration required. Learn more.
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DOWNLOAD A BROCHURE
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Proudly made in the UK
Great Britain has a wonderful history when it comes to watch making and has probably been the home to more advances in horology than any other nation. Bremont is determined to play a pivotal role in the reinvigoration of this industry on British shores. Every Bremont is hand built and tested before leaving the Henley-on-Thames workshop.
Description
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.

Tech spec
The finer detail you’ll want to know...
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Movement
Mechanical BHC9192-MH hand-wound movement
19 Jewels
Glucydur balance wheel
-4 /+4 seconds accuracy
50-hour power reserve -
Functions
Central Hour/Minute
Running small Seconds at 9 O'clock
24hr GMT Globe at 12 O'clock
Date sub-hand at 6 O'clock
Month/Leap year sub-hand at 3 O'clock -
Case
Satin and polished two-piece titanium case
Push-in mono-pusher crown
Month & year correctors to 2 and 4 O'Clock
Case Diameter: 42mm
Case Length: 49.62 mm
Case Depth: 12.65mm
Lug width: 22mm -
Case Back
Decorated titanium case back
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Dial & Hands
Brushed Blue Galvanic metal dial including applied Numerals and Indexes filled with white Super-LumiNova® (Blue emission).
GMT Globe with Day and Night 24 hour sub-dial ring at 12 O'clock.
Blue Satin and CD lines on Sub-dial at 9 and 3 O'clock.
CD Lines and Black Sub-dial ring on Sub-dial at 6 O'clock. -
Crystal
Glass Box anti-reflective sapphire crystal.
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Water Resistance
10 ATM, 100 metres.
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Strap
Two options included: Quick-release titanium bracelet & quick-release blue patina leather strap
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Limited Edition
Limited to 50 pieces.
Includes limited edition wooden box, internal document holder, and coin designed corrector tool.
Perpetual Calendar & GMT
This highly limited Altitude model brings together a perpetual calendar and GMT function — showing the date, month, leap year cycle, and a second time zone — all in a layout that’s clear, intuitive, and easy to adjust via the mono-pusher crown.
Titanium Trip-Tick Construction
The 42mm Trip-Tick case is crafted in lightweight Grade 2 titanium, with a brushed 'Air Force Blue' centre barrel inspired by RAF flight colours.
Limited to 50 Pieces Worldwide
Exceedingly rare, each watch is individually numbered and offers a unique blend of aviation heritage, mechanical mastery and refined utility. Also includes a limited edition wooden box, internal document holder, and coin designed corrector tool.