The Altitude Chronograph GMT represents the pinnacle of Bremont’s aviation heritage—a fusion of the proven durability of the MB series with the enhanced functionality of a chronograph and GMT complication. This is a professional-grade timepiece engineered for those who demand precision, resilience, and elegance in one exceptional tool.
Encased in a 42mm Trip-Tick® case constructed from ultra-durable 904L stainless steel, with a black DLC-coated centre barrel, the Altitude Chronograph GMT is built to perform under extreme conditions. At its core beats the chronometer-rated BC781 automatic movement, delivering an impressive 62-hour power reserve along with a quick-set date, hacking seconds, and an independently adjustable GMT hand.
Engineered for endurance, the movement is suspended within a flexible rubberised mount that absorbs shocks and minimises impact. An open case back showcases the beautifully finished movement in gunmetal grey with Geneva stripes, while maintaining anti-magnetic protection through an integrated soft iron Faraday cage.
The cockpit-inspired dial is designed for clarity and function, featuring applied Super-LumiNova® numerals and markers, recessed chronograph subdials, and a red-tipped GMT hand that tracks a second time zone on a 24-hour day/night scale. A rotating propeller-style seconds subdial at 9 o’clock offers a subtle tribute to Bremont’s aeronautical roots.
Completing the design is Bremont’s newly introduced brushed 904L stainless steel bracelet, engineered for flexibility and comfort. With quick-release curved bars, it offers seamless articulation and an effortless fit.
The Altitude Chronograph GMT—where precision engineering meets elevated style.
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
Class Box anti-reflective sapphire crystal
Water Resistance
10 ATM, 100 metres
Strap
Quick release 904L stainless steel bracelet
Weight
88.8g (watch head only)
Rating & Certification
Chronometer rated to ISO 3159 standard
