The Kerbedanz Maxspor GR8 Monopusher Chronograph

Even in a crowded market of ultra-upscale futuristic-looking luxury watches, Kerbedanz, founded in 2011, has managed to differentiate themselves. Initially known for made-to-order fine enamel dials, and also for creating the world’s largest tourbillons (27mm), the brand has been making distinctive sporty octagonal cases (“GR8”) with matching shaped dials and crystals since 2023. In this article I’ll talk about their line of monopusher chronographs that can be activated underwater, the Kerbedanz Maxspor GR8.

History of the Kerbedanz Maxspor GR8

The very first Kebedanz to use their strikingly faceted GR8 case was a “Maximus” model in 2023, with the brand’s massive 27mm tourbillon inside and a price tag well north of $200,000. The more attainable Kerbedanz Maxspor GR8 line of monopusher chronographs first appeared in 2024, sporting a 46mm width and a price tag around $40,000.

Pairing an irregular dial with a matching shaped sapphire crystal isn’t easy, but Kerbedanz watches pull it off, following in the footsteps of the Roger Dubuis Sympathie, Cartier Crash, Cédric Johner Abyss and Gerald Charles Maestro.

46mm is a large watch, especially in this shape, so the 41mm case size announced in April 2026 should should bring the monopusher within reach of more wrists:

The dials are not simply openworked; much of the actual architecture is reversed to put more of the parts on the dial side. You’ll notice the visible regulating organ beating right at the surface where a running seconds hand would typically go on a chronograph.

Three more variants of the Kerbedanz Maxspor GR8 were released at Geneva Watch Days 2026. One in titanium, one in DLC-coated titanium, and one in a combination of DLC-coated titanium and 18k rose gold.

The unifying theme of these three is that they all have “proper” dials now; more of the movement is covered. And these are serious intricate guilloche dials:

Highlights of the Kerbedanz Maxspor GR8

In addition to all-around excellent finishing, here’s a quick rundown of the Maxspor GR8’s key features:

• Quick-release strap on all models
• Thanks to double gaskets on the monopusher it’s one of the few luxury chronographs that can be activated underwater
• Shaped crystal matching the case
• Dial-side movement architecture
• Screw-regulated balance (similar to Rolex‘s Microstella)
• Balance spring made of Optimox (Optimo‘s proprietary amagnetic alloy)
• Carbon 46mm model offered with full carbon integrated bracelet

Price

The Kerbedanz Maxspor GR8 starts around $40,000. The 41mm ones with guilloche dials cost roughly $44,000 in polished titanium, $47,000 in black DLC-coated titanium, or $84,000 in 18k rose gold. Kerbedanz only makes about 100 watches per year, so they’re pretty much impossible to find on the secondhand market.

Now let’s go over the specs of the latest releases in the Maxspor GR8 line:

Kerbedanz Maxspor GR8 41mm Guilloche Dial Specs

Kerbedanz Model Name	MAXSPOR GR8 41mm Chrono Monopusher
Case material	Polished Grade 5 titanium, DLC-coated Grade 5 titanium, or 18k rose gold + DLC-coated titanium
Case width	41 mm
Case lug-to-lug	50 mm
Movement caliber	Kerbedanz automatic caliber KRB14-2 (Base movement from Concepto Group)
Movement functions	Hours, minutes, running seconds, monopusher chronograph (usable underwater); exposed (dial-side) balance
Power reserve	48 hours
Water resistance	50 m
MSRP	~$44,000 (titanium) ~$47,000 (DLC titanium) ~$84,000 (18k rose gold)
Limited edition	28 pieces (titanium) 28 pieces (DLC titanium) 18 pieces (18k rose gold)

Kerbedanz was founded in Neuchâtel in 2011 by Tigran Kerbedanz, Aram Petrosyan and Kalust Zorik. Current press materials no longer mention Tigran, and it’s possible that his decreased involvement correlates with the brand’s shift from high-jewelry/high-art pieces to the “Richard Mille alternative” that they are today. In any case, the Kerbedanz brand seems to be doing a good job carving out a niche for themselves.