Blacked Out at 500 Meters: Fortis Goes Dark With the DLC Marinemaster
Watches1 min readApr 2, 2026

Blacked Out at 500 Meters: Fortis Goes Dark With the DLC Marinemaster

Fortis coats the Marinemaster in DLC with 4,500 HV hardness — 500m water resistance and COSC-certified Kenissi power.

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Description

Fortis coats their mighty Marinemaster in Dianoir DLC with 4,500 HV hardness — making it virtually scratch-proof. With 500m water resistance and a COSC-certified Kenissi movement, this is a serious tool watch that happens to look menacing.

Design

Full DLC-coated stainless steel case, bidirectional locking bezel, paired with the powerful Kenissi-based Fortis Werk 11 movement.

Specs

  • Movement: Fortis Werk 11 / Kenissi (COSC, 70hr power reserve)
  • Case: 44mm DLC-coated SS
  • Water Resistance: 500m
  • Coating: DLC (4,500 HV hardness)
  • Price: EUR 4,950 (~$5,450 USD)
  • Complications: Date

What's Exciting

500m water resistance with COSC certification and DLC hardness that laughs at desk diving scratches. Fortis means serious business.

Sources

All brand names, logos, and product images are trademarks of Fortis Swiss Watches. Used for editorial commentary and review purposes under fair use. Specs verified against official brand sources and trusted publications as of April 2026.

History

Fortis was founded in 1912 by Walter Vogt in Grenchen, Switzerland, and made history in 1926 partnering with John Harwood to produce the world's first commercially available automatic wristwatch. Fortis became the official watch of the Russian space agency, worn aboard MIR and the International Space Station from the 1990s onward. The Marinemaster represents Fortis's deep-dive heritage, built for professional underwater operations at 500 meters. This DLC edition merges the brand's legacy from the vacuum of space to the pressure of the deep ocean.

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