The Altitude Chronograph GMT represents the pinnacle of Bremont’s aviation timepieces, seamlessly merging the battle-tested durability of the iconic MB series with the enhanced functionality of both a chronograph and a GMT complication.
Crafted in a robust 42mm Trip-Tick® case using ultra-resilient 904L stainless steel and accented by a black DLC-coated center barrel, this model is built to endure extreme conditions. At its core beats the chronometer-rated BC781 automatic movement, offering an impressive 62-hour power reserve, quick-set date, hacking seconds, and an independently adjustable GMT hand.
Designed for maximum shock resistance, the movement is encased within a flexible rubber mount that cushions against impact. Through the exhibition case back, the finely finished movement is visible, featuring gunmetal grey tones and Geneva stripes — all while retaining anti-magnetic protection via a soft iron ring based on Faraday Cage principles.
The cockpit-inspired dial is engineered for clarity and legibility, with applied Super-LumiNova® indexes and recessed chronograph subdials. A bold red-tipped GMT hand tracks a second time zone over a 24-hour day/night scale, while the rotating seconds subdial at 9 o’clock, shaped like a tri-blade propeller, pays homage to Bremont’s military heritage.
A testament to precision and performance, the Altitude Chronograph GMT is a tool watch designed for those who navigate the skies — and life — with purpose.
Functions
Central GMT/Hour/Minute
Chronograph centre sweep seconds hand
Small seconds counter at 9 O'clock
Chronograph small counters with 30 minutes counter at 12 O'clock and 12 Hour counter at 6 O'clock
Date at 6 O'clock
Movement
Calibre: BC781AC movement
No of Jewels: 25 Jewels
Glucydur balance wheel
Anachron balance spring
Nivaflex mainspring
Frequency: 28,800bph (4Hz)
Power reserve: 62-hour
Decorated Bremont rotor
Case specifications
Satin & polished 904L stainless steel Trip-Tick case construction with Brushed Black DLC barrel
Inner anti-magnetic movement protection ring
Protective anti-shock movement mount
Case Diameter: 42mm
Case Length: 49.62mm
Case Depth: 14.7mm
Lug width: 22mm
Case back: Decorated 904L stainless steel open case back
Dial and Hands specifications
Brushed Black Galvanic metal dial including: Numerals and Indexes filled with white Super-LumiNova® (Blue emission)
Grey and Black Day and Night 24 hour dial ring
Brushed sub-dial at 9 O'clock, 12 and 6 O'clock Sub-dials with fine CD Lines
Gloss Black Hour and Minute hands, filled with white Super-LumiNova® (Blue emission)
Gloss white chronograph sweeping seconds hand
Red tipped GMT hand, filled with white Super-LumiNova® (Blue emission)
Gloss White 12 and 6 O'clock sub dial hands
Gloss black Propeller design Running Seconds hand at 9 O'clock with white Super-LumiNova® tips
Crystal
Glass Box anti-reflective sapphire crystal
Water Resistance
10 ATM, 100 metres
Strap
Quick-release black nubuck leather strap with white box-stitching
Weight
88.8g (watch head only)
Rating & Certification
Chronometer rated to ISO 3159 standard
