Review Bremont Altitude MB Stealth Grey

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Bremont has delivered a purposeful update to its aviation-focused Altitude collection with the introduction of the Stealth Grey variant, developed in partnership with Martin-Baker, the company responsible for the majority of the world’s aircraft ejection seat systems. Bremont Altitude MB Stealth Grey is 400-piece limited edition represents a concentrated effort to refine the MB line’s ergonomics and material selection whilst maintaining the functional integrity that defines this particular category of instrument watch.

The Dial: Visual Restraint and Tactile Presence

The dial embodies a departure from conventional legibility strategies. Rather than adopting a sterile aesthetic, Bremont engineers scanned the surface of an actual meteorite and recreated its topography through stamping onto a brass substrate. This reverse-embossed texture receives an electro-applied finish that enhances durability without compromising the material’s natural character. The approach yields a surface that catches light in unpredictable ways, revealing depth and dimension rather than reflecting it uniformly.

Applied numerals and hour markers arrive filled with white Super-LumiNova in blue emission mode, providing the luminosity required in low-light operations without introducing visual noise to the dial plane. The grey inner bezel sits as a secondary visual layer, operated via the bi-directional Roto-Click mechanism at the 4 o’clock crown position.

Bremont retained the MB line’s signature visual elements with deliberate intention. The yellow ‘lollipop’ seconds hand, tipped in red, counters a looped ‘ejection’ pull handle in yellow and black. These bright accents assert themselves against the monochromatic case and dial, functioning as navigation points for rapid time acquisition. A dashed outline surrounds the date window at 3 o’clock, mirroring instrumentation found in military aircraft cockpits, whilst the red triangle positioned centrally echoes the triangular “DANGER” marking on ejector seats themselves. This design vocabulary emerges from genuine operational context rather than aesthetic invention.

Engineering for Resilience

The BB14-AH calibre forms the horological foundation of this piece. Based on the Le Joux Perret platform, the movement operates at 28,800 vibrations per hour (4Hz) with 24 jewels supporting its operation. The 68-hour power reserve proves advantageous for watches intended to service users who may not wear their instruments daily, maintaining operating specifications even after extended static periods.

Bremont engineered this movement with protective architecture rather than pure chronometric precision as its primary objective. A flexible rubber mount suspends the movement within the case, absorbing shock impulses before they reach the balance assembly. A soft-iron shielding ring protects the movement from magnetic field interference, a consideration essential for watches intended for use in environments containing significant ferrous materials or electromagnetic equipment. These provisions acknowledge the practical reality that tool watches encounter conditions far removed from controlled winding environments.

The open case back reveals movement finishing in gunmetal grey with Geneva Stripes, departing from the bright finishing common in dress watches. This choice reinforces the functional aesthetic whilst providing transparency into the movement’s construction quality and architecture. The decorated rotor signals attention to finishing standards even in components obscured from standard viewing angles, a practice that distinguishes purpose-built instruments from watches merely styled to appear serious.

Material Science and Ergonomic Refinement

The 42mm Trip-Tick construction represents Bremont‘s established technical foundation for its larger instruments. Grade 2 titanium receives a treatment process that produces a subtly textured, ultra-matte finish capable of absorbing rather than reflecting light. This surface treatment produces visual qualities reminiscent of stealth aircraft and naval vessels, stripping away reflectivity that might compromise operational utility.

At the case’s centre sits a knurled black PVD barrel that reinforces the robust nature of the MB design language. The knurled dual crowns, positioned at 2 o’clock for winding and setting and at 4 o’clock for bezel operation, have undergone ergonomic optimisation. Users report improved operational smoothness compared to earlier iterations, with the re-engineered Roto-Click bezel mechanism delivering the satisfying click familiar to established MB owners. The concave, angled bezel profile works in concert with the domed, anti-reflective sapphire crystal to create strong visual presence whilst maintaining clarity of dial observation.

Water resistance reaches 100 metres (10 atmospheres), sufficient for incidental water exposure but not directed towards swimming or diving activities. The case measures 49.3 millimetres in length with a depth of 12.23 millimetres and a 22-millimetre lug width, proportions that favour wrists of moderate to substantial circumference.

For Professionals and Enthusiasts

The Altitude MB Stealth Grey arrives as a refinement rather than a reinvention. Bremont has concentrated on material selection and operational ergonomics, addressing specific limitations in the earlier MB platform whilst preserving the design vocabulary that communicates functional heritage. The partnership with Martin-Baker provides contextual legitimacy beyond marketing positioning; these specifications emerge from genuine operational requirements rather than contemporary aesthetic trends. For collectors seeking tool watches grounded in aviation requirements and constructed with uncompromising material standards, this limited edition presents a compelling proposition. The 400-piece production run acknowledges the specialised nature of its intended audience without sacrificing the engineering standards that distinguish Bremont’s output.

Bremont Altitude MB Stealth Grey Technical Specifications

Ref. alt42-mt-grti-gr-b – €6.900,00

Functions

• Hour, Minute, Seconds, Date at 3 o’clock

Movement

• BB14-AH automatic calibre (Le Joux Perret base)
• 24 jewels
• 28,800bph (4Hz)
• 68-hour power reserve
• Decorated rotor
• Open case back

Case

• 42mm Trip-Tick construction
• Grade 2 titanium
• Knurled black PVD barrel
• Bi-directional Roto-Click inner bezel (crown at 4 o’clock)
• Soft iron anti-magnetic movement ring
• Anti-shock rubber mount
• Domed anti-reflective sapphire crystal
• Water resistance: 100m (10 ATM)
• Exhibition case back
• Case length: 49.3 mm
• Depth: 12.23 mm
• Lug width: 22mm

Dial

• Reverse-embossed meteorite texture
• Brass dial
• Applied numerals & indexes with Super- LumiNova® (blue emission)
• Grey inner bezel
• Gloss black hour/minute hands
• Yellow seconds hand with red lollipop tip and pullcord tail
• Anti-reflective glassbox sapphire crystal

Strap

• Quick-release sandblasted titanium bracelet
• Lightweight, durable, and ergonomically designed