
This Watch Is Thinner Than Two Credit Cards Stacked Together. It Should Not Exist.
Konstantin Chaykin built a 1.65mm watch. That is not a typo. The ThinKing Mystery breaks physics and common sense in equal measure.
Kiko Vera
Editor, Chasing Seconds · April 2, 2026
The Impossible Object
A credit card is about 0.76mm thick. Stack two of them and you get 1.52mm. Konstantin Chaykin's ThinKing Mystery is 1.65mm. The entire watch -- case, crystal, movement, dial, everything -- is barely thicker than two credit cards.
This should not exist. And yet.
Who Is Konstantin Chaykin
Chaykin is a Russian independent watchmaker known for wildly creative complications. His Joker watch -- with a face that shows the time through a grinning clown -- became an internet sensation. He is the watchmaking equivalent of a mad scientist who also happens to be a genius engineer.
The ThinKing Mystery is his attempt at the opposite of spectacle. Instead of visual craziness, he went for physical impossibility.
How Thin Is 1.65mm
Most dress watches are around 8 to 10mm thick. An ultra-thin Piaget Altiplano is about 5mm. The current ultra-thin record holders from Bulgari and Richard Mille are around 1.8 to 2mm. Chaykin just went under all of them.
At 1.65mm, the watch is essentially a wafer. You could slide it into an envelope. The engineering required to fit functional components into this space is mind-bending. Every part had to be redesigned from scratch. Standard watch components are simply too thick.
The Mystery Part
The Mystery in the name refers to the display. The hands appear to float on a transparent dial with no visible connection to the movement. This is an old watchmaking trick -- the hands are actually mounted on transparent discs that rotate -- but doing it at 1.65mm thickness adds a layer of absurdity to the engineering challenge.
The Trade-offs
A watch this thin is fragile. You are not playing basketball in this. Water resistance is minimal. The power reserve is limited. This is a proof of concept, a demonstration of what is mechanically possible, not a daily wearer.
And that is perfectly fine. Not everything needs to be practical. Some things just need to make you say "how?"
The CS Take
The ThinKing Mystery is the most impressive mechanical flex of the year. Chaykin took the ultra-thin race -- a competition between billion-dollar brands -- and won it from his workshop. This is what independent watchmaking does best: something nobody asked for, executed at a level nobody expected, from someone nobody saw coming.

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