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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsBremont says the MB Viper began as a functional instrument built to test its ENG300 movement under demanding conditions associated with Martin-Baker ejection-seat testing. The instrument’s design caught the partners’ attention, and Bremont developed that concept into a 300-piece production watch. The resulting MB Viper pairs an aviation-inspired dial with a 43.5 mm titanium case and Bremont’s self-winding ENG352 movement.
How the prototype became the MB Viper
In its May 26, 2023 launch article, Bremont describes the first watch not as a finished consumer model but as a test instrument. The aim was to assess the performance potential of the company’s ENG300 movement during a demanding program associated with Martin-Baker’s fighter-seat testing. Bremont says Martin-Baker supported the program.
The instrument used a functional, minimal casing and a shock-isolating mount that could be fixed to a Martin-Baker live-ejection simulator cockpit dashboard. Bremont says it was later modified with forged-carbon-fibre lugs so it could be attached to an ejection manikin. The company reports that its Anti-Shock mount protected the movement and that the instrument maintained time during the program.
Bremont says the unusual instrument’s design inspired the limited-edition MB Viper. The origin story therefore has two parts: the test instrument supplied the practical starting point, while its appearance provided the design direction for the production watch. Bremont co-founder Nick English described the wider relationship with Martin-Baker as “not a branding exercise,” but a vision of creating “the definitive aviation watch.”
#1 Best Overall
- Modern, pilot-inspired Promaster timepieces equipped for professional use to discover the world from high above.
- Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 43 World Cities, 1/100 Second Chronograph Measures up to 24 Hours, Perpetual Calendar, Dual Time (Second Time Zone), Power Reserve Indicator
- Black Ion-Plated Stainless Steel with Black Silicone Strap
- Black Dial with Orange and White Accents, Anti-Reflective Mineral Crystal
- Featuring our Eco-Drive technology – powered by light, any light. 200 Meters Water Resistant and 5 Year Limited Warranty
What Bremont says the testing involved
Bremont’s account lists live ejection, zoom temperature climb, extreme-temperature endurance, high-altitude and salt-fog testing, as well as an ice-block freeze procedure. These are manufacturer-reported procedures and results; the launch article is not an independent test report.
- Live ejection: Bremont says a manikin was propelled from zero to 120 feet in two seconds, at forces of up to 15G.
- Simulated altitude: The company describes exposure at a simulated 100,000 feet for 60 minutes.
- Temperature exposure: Bremont reports conditions as low as -46°C and then as high as 49°C.
The prototype program concerned the ENG300 test instrument. The production MB Viper is specified with a different movement, the ENG352; the launch account should not be read as saying that the production watch itself underwent every procedure listed for the prototype instrument.
Rank #2
- Modern, pilot-inspired Promaster timepieces equipped for professional use to discover the world from high above.
- Synchronized to Atomic Time Clock for Superior Accuracy, Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 24 Time Zones, 1 Second Chronograph Measures up to 60 Minutes, Perpetual Calendar, 12/24 Hour Time, Alarm, Power Reserve Indicator, Day / Date
- Silver-Tone Stainless Steel
- Sapphire Crystal
- 200 Meters Water Resistant and 5 Year Limited Warranty
MB Viper specifications and design details
| Feature | Bremont’s stated specification |
|---|---|
| Edition | Limited to 300 pieces |
| Case | 43.5 mm matte DLC Grade 5 titanium with a protective carbon coating; anodised 6082 aluminium case middle |
| Movement | Self-winding ENG352 calibre with a 65-hour power reserve, silicon escape wheel, free-sprung hairspring with inertia-weight-timed balance, and KIF shock protection |
| Dial and hands | White dial with seconds track; green-emission Super-LumiNova on hour markers and hand tips; chevron-decorated hands; seconds hand inspired by the test instrument |
| Straps | Orange and black canvas straps |
Bremont also says the matte-black lugs are pocketed on the rear to reduce weight. Together, the white dial, luminous details and chevron hands translate the utilitarian test-instrument concept into features visible on the production watch.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the launch information does—and does not—establish
The MB Viper’s 300-piece limit and its technical specifications are stated in Bremont’s 2023 launch article. Bremont’s current limited-editions collection page offers catalog context, but it does not confirm whether the Viper is currently available. Neither source establishes a current price, so availability and price should be checked with Bremont or a seller before making a purchase decision.
Rank #3
- Modern, pilot-inspired Promaster timepieces equipped for professional use to discover the world from high above.
- Synchronized to Atomic Time Clock for Superior Accuracy, Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 43 World Cities, 1/100 Second Chronograph Measures up to 24 Hours, Perpetual Calendar, Dual Time (Second Time Zone), 2 Alarms, 99-Minute Countdown Timer, Digital Backlight Display, Universal Coordinated Time (UTC) Display, Power Reserve Indicator
- Black Stainless Steel
- Ana-Digi Display; Luminous Hands and Markers; Anti-Reflective Sapphire Crystal
- 200 Meters Water Resistant and 5 Year Limited Warranty
For a comparison with another aviation watch, useful points are case size and materials, movement and power reserve, edition size, included straps, and the source and scope of any testing claims. The Bremont account gives a distinctive prototype history, but it does not by itself establish that the Viper is superior to another watch.
Quick Recap
Best Value
- Silver-tone watch featuring left-handed crown and black dial with 1/20-second chronograph function, slide-rotating inner bezel, and date window
- 45.5 mm stainless steel case with mineral dial window
- Quartz movement with analog display
- Stainless steel band featuring fold-over push-button clasp with safety
- Water resistant to 100 m (330 ft): In general, suitable for swimming and snorkeling, but not scuba diving
Rank #4
- Modern, pilot-inspired Promaster timepieces equipped for professional use to discover the world from high above.
- Synchronized Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 43 World Cities, Perpetual Calendar, Dual Time (Second Time Zone), 2 Alarms, 99-Minute Countdown Timer, Digital Backlight Display, Power Reserve Indicator
- Silver-Tone Stainless Steel
- Anti-Reflective Mineral Crystal
- 200 Meters Water Resistant and 5 Year Limited Warranty
Sources
- Bremont, “MB Viper,” May 26, 2023 — prototype story, reported testing, specifications and edition size.
- Bremont limited-editions collection — current catalog context; it does not confirm Viper availability.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
