Airain Watches: The Revival of a Legendary French Military Chronograph & Divers
At Belmont Watches, we have a deep appreciation for military chronographs with real history behind them. Few watches capture that spirit better than the Airain Type 20.
Airain may not be as widely recognized as some Swiss luxury brands, but among military watch collectors and aviation enthusiasts, the name carries real weight. The brand played an important role in the golden age of French military aviation watches during the 1950s and 1960s, producing some of the most collectible pilot chronographs of the era.
Today, Airain has been successfully revived, bringing back its historic Type 20 and Type 21 chronographs with modern Swiss manufacturing while staying remarkably faithful to the originals.
1934: The Beginning of Airain
Airain was founded in 1934 and became closely associated with practical aviation and military timekeeping. The brand emerged during a period when aviation was rapidly evolving and military chronographs were becoming essential navigation tools for pilots.
While Airain produced a variety of watches throughout its early history, the brand’s identity would eventually become tied to one legendary model family: the Type 20.
The French Military and the Type 20 Specification
Following World War II, the French Ministry of Defense developed a strict set of requirements for military pilot chronographs. These specifications became known as the Type 20 standard.
Several manufacturers were selected to produce these watches for French military aviation units, including:
- Airain
- Breguet
- Dodane
- Auricoste
- Vixa
- Mathey-Tissot
The Type 20 watches were designed specifically for military pilots operating in analog cockpits and required:
- Flyback chronograph functionality
- Rotating 12 hour bezel
- High legibility
- Strong accuracy standards
- Compact wearable case sizes
- Reliable manual wind movements
The flyback function was especially important because it allowed pilots to instantly reset and restart the chronograph while navigating.
The Airain Type 20
Among the various Type 20 manufacturers, Airain produced one of the cleanest and most balanced interpretations of the specification.
The Airain Type 20 became known for:
- Symmetrical chronograph layout
- Excellent legibility
- Thin wearable proportions
- Strong military functionality
- Reliable flyback chronograph movement
Vintage Airain Type 20 watches were issued to French military aviation personnel, including ALAT pilots from the French Army Light Aviation division.
Today, original Type 20 models are highly collectible and considered some of the most desirable vintage military chronographs on the market.
The Type 21 Evolution
As military requirements evolved, the French Ministry of Defense updated the original Type 20 specification into what became known as the Type 21 standard.
The Type 21 introduced improved durability and serviceability while preserving the core pilot chronograph layout.
Modern Airain Type 21 models continue this evolution with:
- Black glossy dials
- Flyback chronograph functionality
- Modern Swiss movements
- Vintage correct proportions
- Sapphire crystals
The result is a watch that feels authentically mid century without sacrificing modern reliability.
The Modern Revival of Airain
Like many historic military brands, Airain faded during the quartz crisis and changing industry trends. But interest in vintage military chronographs exploded in recent years, creating demand for faithful reissues of classic designs.
The modern Airain revival has focused heavily on historical accuracy and collector appeal. Current reissues maintain:
- Vintage inspired case sizes around 39mm
- Flyback chronograph movements
- Minimal dial text
- Military styling
- Manual winding calibers
Modern Type 20 models use Swiss made column wheel flyback chronograph movements developed specifically for the brand.
Collectors appreciate that Airain avoided over modernizing the watches. The new pieces still feel connected to their military roots.
Absolutely — Airain’s chronographs get most of the oxygen, but the brand’s dive-watch history is a legit part of the story too. Here’s a blog-ready addition you can drop in after the chronograph section.
Airain Beyond the Chronograph: The Sous-Marine Diver
While Airain is best remembered for its Type 20 flyback chronographs, the brand was not limited to aviation instruments. By the early 1960s, Airain had also entered the booming world of recreational and professional dive watches with the Sous-Marine, a skin diver that reflected the adventurous mood of the era.
Launched in 1962, the original Airain Sous-Marine arrived during what many collectors now consider the golden age of dive-watch design. Scuba diving was becoming more accessible, underwater exploration had captured the public imagination, and brands across Europe were racing to build watches that could handle both real aquatic use and everyday wear. Airain’s answer was a compact, purpose-built diver with a distinctive 1960s personality. The modern Airain brand describes the current Sous-Marine as a faithful continuation of that original 1962 model.
The Sous-Marine followed the general skin-diver formula of the period: a relatively compact case, highly legible dial, rotating bezel, luminous markings, and a straightforward tool-watch layout. Vintage examples are known for their large Arabic numerals, strong dial contrast, and playful seconds-hand designs, including Airain’s unusual “DNA strand” seconds hand, a quirky detail that helped separate it from the sea of similar-looking divers.
One of the most interesting historical details is the Parmentier crown system. Rather than using a conventional exposed crown, the Sous-Marine used a protective cap system developed by Jean-René Parmentier in 1962. Airain describes the invention as the Capuchon & Joint sur Remontoir, a cap-and-seal construction intended to help protect the crown and improve water resistance. On the modern re-edition, Airain kept this unusual feature as a central part of the watch’s identity.
The Sous-Marine was also rated to 200 meters of water resistance, which gave it real dive-watch credibility for its time. Monochrome Watches describes the original model as a reliable and accurate skin diver, with a chunky case, unidirectional rotating bezel, matte black dial, large numerals, and the signature DNA-style seconds hand.
Check out all Sous-Marine Models here
Why Collectors Love Airain
Airain occupies a unique niche in the collector world because it combines:
- Genuine military history
- French aviation heritage
- Flyback chronograph functionality
- Under the radar collectibility
- Vintage proportions
- Strong enthusiast credibility
Unlike some larger luxury brands, Airain still feels like an insider’s chronograph.
That authenticity is part of the appeal.
FAQ: Airain Watches
What is the Airain Type 20?
The Airain Type 20 is a military flyback chronograph developed for French military pilots during the 1950s.
What does flyback chronograph mean?
A flyback chronograph allows the user to instantly reset and restart the timer with one push, which was useful for pilots navigating flight legs.
Are Airain watches military issued?
Vintage Airain Type 20 watches were issued to French military aviation units including ALAT personnel.
Are modern Airain watches Swiss made?
Yes. Modern Airain watches are Swiss made and use Swiss mechanical movements.
Final Thoughts from Belmont Watches
Airain represents one of the most important names in French military chronograph history. The Type 20 is not just a beautiful vintage inspired watch. It is a direct connection to the golden age of military aviation timekeeping.
For collectors who appreciate flyback chronographs, military history, and understated vintage design, Airain remains one of the most compelling aviation watch brands available today.
At Belmont Watches, we love brands like Airain because they remind us that some of the best watches ever made were designed for real purpose.
About the Author
Adam Beardsley is the founder of Belmont Watches and a longtime enthusiast of military chronographs, vintage aviation watches, and historically significant tool watches.