The Airain Sous-Marine Tropical Ref. 524.457 is a warm, vintage-leaning take on the Sous-Marine re-edition, developed through the CoLAB initiative with input from collectors and enthusiasts worldwide. Powered by the Swiss-made AM5 automatic calibre (based on the La Joux-Perret G100), it delivers a 68-hour power reserve, smooth tungsten rotor, and refined finishing with Geneva stripes and blued screws, pairing classic “tropical” aesthetics with modern reliability.

Technical Specifications:

• Fixoflex bracelet
• 120-click, full black PVD-coated, counter-clockwise rotating bezel with white engraving and Super-Lumi Nova Lume dot (Light Old Radium)
• Parmentier crown cap system
• Roulette date wheel
• Height: 12.77mm (10.25mm without crystal)
• Double-domed sapphire crystal with anti-reflective coating
• Diameter: 37.5mm case / 38.2mm bezel
• Lug width: 20mm, lug-to-lug: 48.2mm
• Engraved case back
• Numerals and hands with Super-Lumi Nova Light Old Radium