Doxa just unveiled the Doxa SUB 300 Carbon Seafoam, a limited-edition timepiece that merges classic dive DNA with modern materials and a unique seafoam-green dial. Only 100 units will be produced, and they’re available exclusively through Watches of Switzerland.
Doxa SUB 300 Carbon Seafoam takes a modern turn with forged carbon

This special edition features a forged carbon case measuring 42.5mm wide and 13.5mm thick. Not only that, the matte, patterned finish adds a high-tech feel that contrasts nicely with traditional dive watch designs. Combined with the unexpected seafoam dial, the watch immediately stands out from the usual blacked-out diver crowd.
Meanwhile, Doxa ships the watch with two strap options: a black rubber band for everyday use and a Seafoam NATO strap for a more casual vibe. Thanks to the easy swap system, users can switch looks quickly offering both style and practicality in one package.
Flagship build includes sapphire and titanium
Designed for serious wear, the watch also packs in rugged specs: a titanium inner case, sapphire crystal, and 300 meters of water resistance. In addition, the carbon bezel features a unidirectional mechanism, making it ideal for tracking dive times with precision. Even so, visibility remains a strong point Super-LumiNova markings ensure the dial stays legible, even in darker conditions.
Standout features of the Doxa SUB 300 Carbon Seafoam:
- Forged carbon case with matte finish
- Seafoam dial with Super-LumiNova accents
- COSC-certified Swiss automatic movement
- Titanium inner case with sapphire crystal
- 300m (30ATM) water resistance
- Two straps: black rubber and Seafoam NATO
Precision meets collectibility in this limited edition
Inside, the Doxa SUB 300 Carbon Seafoam runs on a COSC-certified automatic movement with a 38-hour power reserve. It’s a reliable engine wrapped in style. And with just 100 pieces produced, availability is scarce by design.
Retail is set at $3,990, and Watches of Switzerland is the exclusive seller in the UK and the US, both online and in-store. If you’re after something that breaks the mold without ditching dive credibility, this Doxa hits the mark.