Chronomètre FB 1.2

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Chronomètre FB 1.2

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REVISITING THE FERDINAND BERTHOUD SPIRIT

Issued in an exclusive 50-piece series, the Chronomètre FERDINAND BERTHOUD 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 18^th century for the French King and Navy.

Features

The movement of the Chronomètre FERDINAND BERTHOUD 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.