The Monaco has carried the same job description since 1969: a square, water-resistant, automatic chronograph with a racing habit. The new one is none of those things except square and racing-adjacent. Presented during the Formula 1 Louis Vuitton Grand Prix de Monaco 2026 and published by TAG Heuer on June 5, the Monaco Speed 12 drops the chronograph entirely and tells the time with twelve rotating pistons, using a movement built by La Fabrique du Temps Louis Vuitton. It is the first time the Spin Time mechanism has left the Louis Vuitton catalogue for another LVMH brand.
How the pistons tell the time
The dial, if that is still the word, is fully openworked and arranged like an engine seen from above. At the centre sits a vertically grooved cover flanked by two visible balance-and-gear sections, with a skeletonised central minutes hand finished with a red lacquered tip. Around the black opaline minute ring stand twelve piston-shaped indicators in titanium, each engraved with a black lacquered Arabic numeral.
The pistons are the hour display. As the minutes hand completes its hour, the active piston rotates back to its parked position and the next one turns 90 degrees to present its numeral. It is a jumping-hour complication restaged as a firing order, as Monochrome Watches describes it, and the animation happens once every hour rather than continuously, which keeps the energy cost manageable for a 45-hour power reserve.
A Monaco case, rebuilt around a suspended movement
The case keeps the Monaco's square plan at 40mm but is machined from Grade 5 titanium with brushed and polished finishing. The bezel is sapphire, the crystal is domed sapphire, and the caseback is sapphire in a titanium frame, so the mechanism is visible from both sides. Inside, four black DLC-coated openworked arches hold the movement suspended at the corners. Water resistance is 30 metres, which tells you what kind of Monaco this is; the screw-down-pusher arguments do not apply to a watch with no pushers.
The movement, and what the LVMH badge swap means
The calibre TH84-00 is an automatic movement developed and manufactured by La Fabrique du Temps Louis Vuitton, the Geneva facility founded around master watchmakers Michel Navas and Enrico Barbasini. The Spin Time display is their patent, in Louis Vuitton's Tambour and Escale lines since 2009, and this is its first appearance under another marque. The movement runs at 28,800 vibrations per hour and stores 45 hours of reserve; the caseback engraving counts 35 jewels.
That transfer is the part collectors will argue about. TAG Heuer has spent the past two years rebuilding the Monaco's mechanical credibility in-house, with the Split-Seconds at the top and the TH20 chronographs below it. The Speed 12 takes the opposite route, importing a signature complication from the group's high-watchmaking atelier and restyling it in TAG Heuer's racing language. Whether that reads as synergy or as borrowed plumage will depend on the buyer, and with 50 pieces it only needs 50 buyers.
Price and availability
The Monaco Speed 12, reference WBW2180.FT8133, comes on a black rubber strap with textile-style embossing and red stitching, closed by a titanium folding clasp. It is limited to 50 individually numbered pieces, priced at CHF 70,000, EUR 77,000 or USD 87,000, with availability from December 2026. For reference, that is roughly four times the price of the Monaco Split-Seconds when it launched, and the most expensive Monaco in the current catalogue by a wide margin.
