The Formex Reef 39.5 Forged Carbon doesn’t try to reinvent the dive watch. Instead, it reshapes how a compact diver can feel, look, and adapt, using material innovation rather than size or complexity to stand out.
This latest release builds on one of Formex’s most wearable platforms. The change is subtle in concept but impactful in execution, introducing forged carbon not as a performance gimmick, but as a visual and tactile upgrade.
It’s a familiar watch, seen through a completely different surface.
A forged carbon identity that transforms the design
The defining feature of this version is the use of forged carbon for both the dial and bezel. Created by compressing carbon fibers under heat and pressure, the material produces a marbled pattern that is unique to each piece.
Unlike traditional carbon applications focused on weight savings, Formex uses it to create depth and variation. The result is a dial that shifts under light, with organic textures that feel less manufactured and more natural.
The bezel takes this further. It features engraved markings filled with Super-LumiNova, a process that requires precision laser work to avoid damaging the carbon surface.
This combination gives the watch a darker, more technical personality while keeping it visually dynamic.
A compact case that defines everyday wearability
The Reef 39.5 platform remains unchanged in size, and that is part of its appeal. At 39.5 mm in diameter and 11 mm thick, it sits comfortably on a wide range of wrists.
The case uses a hybrid construction with stainless steel on the exterior and a titanium container inside, balancing durability with reduced weight.
With a 300-meter water resistance, screw-down crown, and sapphire crystal, it retains full dive-watch capability despite its compact proportions.
This is where the Reef stands out. It offers professional specs without the bulk typically associated with them.
A dial and bezel built for clarity and depth
Despite the textured carbon surface, legibility remains strong. Applied indices and hands are filled with Super-LumiNova, ensuring visibility in low light conditions.
The date window at 6 o’clock is beveled and integrated carefully into the dial, maintaining symmetry without disrupting the design.
The fully lumed bezel is another highlight. Unlike traditional bezels that only illuminate a single marker, this one glows across its entire scale, improving usability in dark environments.
A chronometer movement focused on reliability
Inside, the watch runs on the Sellita SW300-1 automatic movement, a slim and proven calibre.
It operates at 28,800 vibrations per hour and delivers a 56-hour power reserve, while also being COSC-certified for chronometer-level accuracy.
This choice reflects Formex’s philosophy. Instead of chasing in-house complexity, it focuses on reliability, precision, and serviceability.
Modularity remains at the core of the Reef concept
One of the defining aspects of the Reef series is its modular system. The forged carbon bezel can be swapped out for ceramic or steel alternatives without tools, allowing the watch to change character instantly.
Straps and bracelets follow the same approach, featuring quick-release systems and fine-adjustment clasps for easy customization.
This flexibility turns the watch into more than a single design. It becomes a platform that adapts to different styles and situations.
Real-world usability meets material experimentation
On the wrist, the Reef 39.5 Forged Carbon feels lighter than its steel construction suggests, thanks to its compact size and balanced case design.
The textured dial adds visual interest without sacrificing readability, while the interchangeable system makes it practical for both daily wear and more active use.
It remains a tool watch at heart, but one that pays attention to detail and comfort.
Availability and price reflect accessible innovation
The Reef 39.5 Forged Carbon is priced at approximately $2,085 on a strap and $2,230 on a bracelet, keeping it within the accessible luxury segment for Swiss dive watches.
An initial batch is limited to 100 pieces, though it is not positioned as a strict limited edition.
This approach balances exclusivity with ongoing availability, aligning with Formex’s broader strategy.
A compact diver redefined through material and versatility
The Reef 39.5 Forged Carbon doesn’t change the fundamentals. It refines them.
By introducing forged carbon into a proven platform, Formex adds a new layer of identity without compromising usability or performance.
It remains a compact dive watch, but now with a more expressive surface, one that feels individual, adaptable, and quietly distinctive.