Issued in an exclusive 50-piece series, the Chronomètre FB 1.2 is the first model in the collection. Its vertical satin-brushed black dial is framed by an octagonal rose gold case with black ceramic lugs. Its sides feature four watertight portholes revealing the intricate workings of Calibre FB-T.FC with its pillar-type architecture. The transparent sapphire case-back provides a chance to admire the 1,120-part tourbillon movement with fusee-and-chain transmission. Four patent applications have been filed for certain mechanisms of this COSC-certified movement.
Both contemporary and technical, this exceptional model reinterprets the mechanical prowess and extreme precision of the Marine Chronometers that Ferdinand Berthoud produced in the 18th century for the French King and Navy.
The movement of the Chronomètre FB 1.2 has a low-frequency tourbillon (3 Hz) with direct-drive centre seconds and constant force regulation by fusee-and-chain transmission. This reversed mechanism based on an original construction occupies an exceptionally small space in the movement thanks to a suspended-type construction.
The constant force transmitted to the escapement via the fusee-and-chain mechanism is the result of three years’ R&D, resulting in exceptional and rating regularity, certified by the Official Swiss Chronometer Testing Institute (COSC).
Connected to the barrel via a driving wheel, a suspended truncated cone moves up and down along an arbor fitted to the mainplate. The position on the cone of a feeler spindle reflects the state of wind of the barrel, which then passes on the level of the movement’s power reserve to the hand of the dedicated display.
Both contemporary and technical, this exceptional model reinterprets the mechanical prowess and extreme precision of the Marine Chronometers that Ferdinand Berthoud produced in the 18th century for the French King and Navy.
Discover this Piece
