Key Highlights
- Numbered and limited to 12 pieces worldwide, each individually engraved on the sapphire crystal caseback.
- Case and bracelet combine sapphire crystal with 18K white gold treated with black coating.
- 197 diamonds in total: 196 baguette-cut (~15.99 carats) across the bezel, dial, and bracelet, plus one brilliant-cut diamond (~0.17 carat) on the crown.
- Calibre 3.1: in-house manufacture manual-wind skeleton movement, 55-hour power reserve, 4Hz frequency.
- Sapphire crystal bracelet links required 1,600 hours of machining to produce.
- Full assembly of the movement requires 7 days of work by CHANEL Watch Manufacture artisans.
- 38 mm case diameter; 158 movement components; 21 rubies.

What Makes It Special
Twelve pieces. That is the entirety of the J12 X-Ray Coco Game’s existence in the world, and CHANEL intends every detail to justify that constraint. The watch is not simply a skeleton — it is an argument about what transparency in haute horlogerie actually costs when pursued without compromise.
The CHANEL Watchmaking Creation Studio chose sapphire crystal as the dominant material not for its aesthetic novelty but for its optical logic: the same material that forms the case, the dial bridge, and the caseback also constitutes each link of the bracelet. Light passes through the entire construction in a single, uninterrupted trajectory. The result is a chiaroscuro effect — the movement’s components appearing to float in suspension against the contrasting lines of blackened gold — that no conventional skeletonisation technique could replicate.
Case, Setting and Finishing
The 38 mm case pairs sapphire crystal with 18K white gold, both treated with a black coating that provides the dark counterpoint essential to the design’s legibility.
The fixed bezel is hemmed in blackened gold and pavé-set with 46 baguette-cut diamonds totalling approximately 5.46 carats. That same logic extends to the dial indexes, also set with baguette-cut diamonds, and to the crown, which carries a single brilliant-cut diamond of approximately 0.17 carat. The bracelet represents the most demanding element of the entire piece: sapphire crystal links crossed by a central line of baguette-cut diamonds bordered with blackened gold, set with 138 baguette-cut diamonds totalling approximately 10.15 carats, secured by a triple-folding buckle. Across the entire watch, 197 diamonds account for a combined weight of approximately 16.16 carats. The sapphire crystal components of the bracelet alone required 1,600 hours of machining — a figure that speaks directly to the hardness of corundum and the tolerances demanded by the design.

Movement and Material Engineering
At the centre of the J12 X-Ray Coco Game sits the Calibre 3.1, CHANEL’s in-house manufacture movement built specifically for this skeletal architecture.
The timer bridge, the plate, and the gear-train bridge are each fabricated in sapphire crystal, which transforms the movement into something closer to a suspended mechanism than a conventional calibre. At 29.35 mm in diameter and 6.77 mm thick, the Calibre 3.1 winds manually, beats at 28,800 vibrations per hour (4Hz), and delivers a power reserve of approximately 55 hours. Its 158 components include 21 rubies, a variable inertia balance, and a balance shock protection system. Full assembly requires 7 days of work by the artisans of the CHANEL Watch Manufacture, reflecting the precision required to align sapphire-crystal bridges with gold components to the tolerances a skeleton construction makes visible.

Edition Context and Collector Relevance
Twelve numbered pieces places this release firmly outside the category of limited series and into the territory of commission-scale production.
The sapphire crystal caseback is engraved with each watch’s individual “X/12” designation, and the piece carries 30 metres of water resistance. For collectors in the GCC, where demand for ultra-limited haute horlogerie has grown in parallel with regional appreciation for jewellery-set watches, the J12 X-Ray Coco Game occupies a position with very few direct precedents in CHANEL’s own catalogue. It combines the mechanical credibility of an in-house calibre with a diamond and sapphire construction that aligns as readily with haute joaillerie as with haute horlogerie. Both disciplines, in this instance, demanded equal skill and equal time.
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Frequently Asked Questions
How many pieces of the CHANEL J12 X-Ray Coco Game will be made?
The J12 X-Ray Coco Game is numbered and strictly limited to 12 pieces worldwide. Each piece bears an individual 'X/12' engraving on the sapphire crystal caseback.
What movement powers the CHANEL J12 X-Ray Coco Game?
The watch is driven by CHANEL's in-house Calibre 3.1, a manually wound manufacture movement with a power reserve of approximately 55 hours. The timer bridge, plate, and gear-train bridge are all crafted in sapphire crystal, creating the floating, mystery-movement effect visible through the dial.
How many diamonds does the J12 X-Ray Coco Game contain in total?
The watch is set with 196 baguette-cut diamonds totalling approximately 15.99 carats, plus one brilliant-cut diamond of approximately 0.17 carat on the crown, for a combined diamond count of 197 stones.
Why does the sapphire crystal bracelet take 1,600 hours to produce?
Each sapphire crystal bracelet link requires highly precise machining to achieve the optical clarity and structural integrity demanded by the design. CHANEL states that the sapphire components alone require 1,600 hours of machining, a figure that reflects the extreme hardness of the material and the tolerances involved in shaping it.
What collection does the J12 X-Ray Coco Game belong to?
It belongs to CHANEL's J12 collection, a cornerstone of CHANEL Haute Horlogerie. The Coco Game designation and X-Ray name signal its position at the apex of that collection, distinguished by full skeletal transparency and a near-total sapphire construction.


