Konstantin Chaykin built his reputation turning cartoonish concepts into genuinely engineered mechanical watches, and the new Atomic Heart x Left Twin / Right Twin is his most literal crossover yet: two robot-ballerina characters from the 2023 video game Atomic Heart, rendered as rotating dial discs. The pair launched on September 29, 2026 at CHF 20,000 each, limited to 69 pieces per side.
AI disclosure: the photography in this post was generated from real reference images of the Atomic Heart Twins to illustrate the watch's design and specs. It is not a photograph of a physical piece sold by 5D Watches.
TL;DR
- Two separate limited editions: Left Twin and Right Twin, 69 pieces each
- Display: Chaykin's signature Wristmon rotating-disc system, repurposed as robot "chest" hour and minute indicators
- Case: 40mm x 12.9mm titanium, 30m water resistance
- Movement: caliber K.18-25, a heavily modified La Joux-Perret G200 base with an in-house 68-component display module
- Price: CHF 20,000 per piece
What Chaykin Actually Built
The Wristmon System, Repurposed
Chaykin's Wristmon display, first used on his Joker and Lunokhod watches, replaces conventional hands with rotating discs that reveal numerals or imagery through a cutout window. On the Atomic Heart Twins, two discs sit in the lower half of the dial, each styled as a robot's chest panel, with a pair of synthetic ruby elements acting as the hour and minute pointers.
The Wristmon discs and the oversized moonphase window, the two complications doing the actual storytelling.
A Moonphase That Doubles as Set Design
Above the Wristmon discs, an oversized moonphase complication sits under its own 10.1mm sapphire window, roughly a quarter of the dial's real estate. It is a genuine complication, not a printed disc for show, and it ties the mechanical display back to the game's dystopian sci-fi aesthetic without resorting to a printed character illustration.
Case and Movement Specs
| Spec | Detail |
|---|---|
| Case diameter | 40mm |
| Case thickness | 12.9mm |
| Case material | Titanium, polished and directionally brushed |
| Water resistance | 30m |
| Caseback | Sapphire window, secured by six screws |
| Movement | Caliber K.18-25 (La Joux-Perret G200 base) |
| Jewels | 30 |
| Frequency | 28,800 vph |
| Power reserve | 68 hours |
| Strap | Exclusive in-house fabric strap, titanium pin buckle |
The 12.9mm-thick titanium case, polished and directionally brushed.
The Movement Behind the Theatrics
It would be easy to assume a watch this visually loud cuts corners on the movement. It doesn't. The K.18-25 starts from a proven La Joux-Perret G200 automatic base and adds a 68-component in-house display module just to drive the rotating discs and moonphase, on top of a healthy 68-hour power reserve. That is a real engineering lift for what could have been a novelty.
The K.18-25, a La Joux-Perret base carrying a genuinely complex in-house display module.
The easy version of this collaboration is a printed character on a dial. Chaykin built a mechanism instead, which is the actual reason collectors take his gimmick watches more seriously than most.
Pricing and Scarcity
At CHF 20,000 per piece and 69 units per side (138 total across both Twins), this sits in familiar territory for Chaykin's limited runs: expensive enough to signal real engineering ambition, scarce enough that secondary pricing will likely track demand from Atomic Heart's gaming audience as much as from traditional collectors, a crossover the brand is clearly betting on.
Why This Fits Chaykin's Track Record
Chaykin has built an entire identity around taking a joke seriously: a Joker-faced moon, a Lunokhod rover-themed watch, a Levitas with a floating tourbillon bridge. The Atomic Heart collaboration follows the same formula, pick an unexpected, culturally specific reference, then build a mechanism that actually earns the concept rather than slapping a licensed image on a dial. It is why Chaykin gets taken seriously by collectors who'd otherwise dismiss a video-game watch outright.
At 40mm, the Twins wear more like a serious complication piece than a novelty, which is the point.
FAQ
How much does the Konstantin Chaykin Atomic Heart Twins cost?
Each piece, Left Twin or Right Twin, is priced at CHF 20,000.
How many were made?
69 pieces of each version, 138 total across the Left Twin and Right Twin.
What movement is inside?
Caliber K.18-25, built on a La Joux-Perret G200 automatic base with an in-house 68-component display module, 30 jewels, 28,800 vph, and a 68-hour power reserve.
What is a Wristmon display?
It's Konstantin Chaykin's signature rotating-disc time display, used in place of conventional hands, here styled as the Atomic Heart robot characters' chest panels.
Is the Atomic Heart Twins water resistant?
It carries 30m water resistance, enough for incidental splashes but not for swimming or diving.