Chronograph FXR-4 Openwork

The Jean‑Marc Fleury Chronographe FXR‑4 Openwork (Ref. 101005) is a highly architectural, fully skeletonised mechanical chronograph housed in a 40 mm titanium case with a 12.8 mm thickness and 30 m water resistance. Its openworked calibre is a manual‑winding mechanical movement beating at 21,600 vph with a 60‑hour power reserve, constructed around a visible column‑wheel and horizontal clutch that expose the complete chronograph switching and coupling sequence from the dial side. The movement’s skeletonised bridges and plates reveal the escapement, balance assembly, gear train, and the hammer‑and‑heart‑cam reset mechanism, all finished with hand‑executed anglage, polished bevels, and straight‑graining.

The watch displays hours, minutes, seconds, date, chronograph, and a day/night indication, all supported by a sapphire open-worked dial that serves as a structural frame rather than a traditional dial surface. The titanium case is paired with a leather strap and pin buckle, maintaining Fleury’s philosophy of lightweight rigidity and maximal mechanical visibility.

Launched in 04/2026 as part of the Chronographe FXR‑4 collection, this reference embodies pure movement architecture, showcasing the chronograph’s mechanical choreography in full transparency for collectors who value technical depth and artisanal finishing.