Formex Watch: Reef 39.5mm Automatic Forged Carbon Limited Edition

Formex Reef 39.5mm Chronometer Carbon: a 100-piece limited edition in genuine forged carbon

The Formex Reef 39.5 Automatic Chronometer 300M Forged Carbon embodies Formex's technical approach to modern diving. With its forged carbon dial, this Formex Reef 39.5 Carbon stands out immediately for its lightness and unique aesthetic, while maintaining the demanding standards of a true diving watch made by Formex.

The 39.5mm case of this Formex Reef Chronometer is paired with an interchangeable forged carbon bezel, a hallmark of the Reef collection. This system, exclusive to Formex, allows the watch's appearance to be changed without tools. The textured black dial, combined with applied indices and highly luminescent hands, guarantees optimal readability in any circumstance.

Powered by a COSC-certified automatic Sellita SW300-1 chronometer movement, the Formex Reef 39.5 Carbon offers precision and reliability. Its bracelet incorporates the Formex patented quick micro-adjustment system, ensuring optimal comfort. Water-resistant to 300 meters, this Formex Reef 39.5 Carbon is a technical diving watch designed for demanding environments.

Technical specifications

• Brand: Formex
• Collection: Reef
• Model: Reef 39.5 Automatic COSC Chronometer 300M Forged Carbon
• Movement: Swiss automatic, COSC-certified chronometer
• Limited edition: 100 pieces
• Caliber: Sellita SW300-1
• Power reserve: Approximately 56 hours
• Functions: Hours, minutes, seconds, date
• Case: Forged carbon
• Diameter: 39.5 mm
• Lug-to-lug: 45.5 mm
• Thickness: 11 mm
• Crystal: Sapphire with anti-reflective coating
• Bezel: Interchangeable unidirectional rotating forged carbon
• Case back: Transparent
• Dial: Textured black forged carbon
• Hands: Luminescent
• Indices: Applied luminescent
• Bracelet: Stainless steel, nylon, or rubber (depending on configuration)
• Clasp: Folding clasp with micro-adjustment
• Water resistance: 300 meters
• Origin: Switzerland
• Formex Warranty: 3 years
• Pre-order: delivery May 2026

Why choose this watch?

The Formex Reef 39.5 Automatic Chronometer 300M Forged Carbon is a modern diving watch that combines innovation and performance. Its forged carbon dial, interchangeable bezel, and COSC-certified movement make it a technical and versatile piece. Its production limited to 100 pieces makes this Reef rarer than other versions. The Formex Reef 39.5 Carbon is ideal for enthusiasts of high-end sports watches looking for lightness, precision, and modularity.

About the brand Formex

Formex is an independent Swiss watch brand recognized for its technical innovations and commitment to comfort. The Formex brand develops unique patented solutions such as case suspension systems and micro-adjustment clasps. With the Reef collection, Formex offers modern, high-performance, and modular diving watches.