Airain Sous-Marine 'Ocean Green' 524.481

The Airain Sous-Marine “Ocean Green” 524.481 brings a fresh, contemporary edge to the brand’s vintage-inspired dive watch lineup, pairing classic proportions with a rich green dial that feels both modern and timeless. Encased in stainless steel, the watch stays faithful to mid-century dive watch design with its clean symmetry, domed crystal, and highly legible layout. The deep green dial shifts subtly depending on the light, giving the watch a dynamic character while maintaining the understated feel that defines the Sous-Marine collection. Luminous markers and hands ensure strong visibility, while the unidirectional bezel reinforces its true dive-watch functionality.

What makes the “Ocean Green” especially compelling is how naturally it balances retro styling with everyday versatility. The color adds personality without becoming flashy, making it equally comfortable as a casual daily wearer or part of a more curated collection. Powered by a reliable automatic movement and finished with thoughtful vintage-inspired details, the 524.481 captures the charm of classic skin divers while offering the durability and practicality expected from a modern timepiece. For collectors drawn to heritage design with a unique twist, the Sous-Marine “Ocean Green” delivers a refined take on the neo-vintage diver trend.

Parmentier Crown:

The case features a so-called Parmentier crown that adds even more character. The Parmentier construction consists of a small winding crown and a large screw-on cap to cover it. This helps make the Sous-Marine water resistant to 200 meters. The screw-on cap features a notched recess on the outside so you can operate the small crown underneath. A practical thing to keep in mind is that the cap comes off the watch as a separate element.

The Movement:

The movement inside the Airain Sous-Marine is the Swiss-Made AM5 automatic calibre, based on the La Joux-Perret G100. It features a 68-hour power reserve, a tungsten rotor for smooth rotation and weight distribution, and is regulated to four positions for accuracy. The movement is decorated with Geneva stripes and blue polished screws, ensuring both performance and aesthetic appeal.

Reference: 524.481

Strap: Fixoflex Steel Bracelet and Tropic Rubber Strap

Case: 37.5mm x 12,77mm (10,25mm w/o crystal) Thickness x 48.2mm lug to lug - Stainless Steel

Crown: Parmentier Crown Cap System

Water Resistance: 200m (20ATM)

Lug Width: 20mm

Movement: Caliber AM5 (La Joux-Perret G100 Base) - Automatic

Dial: Ocean Green - numerals in Super-Luminova® 'BGW9'

Bezel: 120 Click, Full Black PVD Coated, Super Luminova Lume Dot 'BGW9'

Date Wheel: Roulette Date Wheel

Functions: HMS, Date

Box and Papers: Inner/outer boxes, and warranty card

Crystal: Double Domed Sapphire

Bracelet size: 7.5"

New

Airain is a historic French watch brand founded in 1934 that became best known for producing military pilot chronographs for the French armed forces during the 1950s and 1960s. The brand earned its reputation through the legendary Type 20 flyback chronograph, a watch developed to meet strict specifications set by the French Ministry of Defense for military aviators.
The Airain Type 20 became one of the most respected military chronographs of its era thanks to its flyback functionality, rotating bezel, highly legible dial, and rugged reliability. Alongside brands like Breguet and Dodane, Airain helped define the golden age of French aviation watches.

Today, Airain has been revived with faithful modern recreations of its historic Type 20 and Type 21 chronographs. The brand continues to focus on vintage inspired aviation watches that combine mid century military design with modern Swiss manufacturing and mechanical reliability.