Chronomètre FB 1.2

Reference# FB 1.2
  • Details
  • Description
  • Limited Edition: 50 pieces
  • Case: 18-karat rose gold
  • Size: 44mm
  • Movement: hand-wound manufacture caliber FB.T.FC, COSC-certified
  • Function: tourbillon, power reserve, suspended fusée and chain constant-force transmission regulation
  • Power Reserve: approximately 53 hours
  • Water Resistance: 30m
  • Dial: black, vertical satin-finish
  • Caseback: sapphire crystal
  • Strap/Bracelet: hand-sewn alligator leather
  • Factory Warranty: three years

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,  including the constant-force module and the power-reserve mechanism.  The transparent sapphire case-back provides a chance to admire the 1,120-part tourbillon movement with fusee-and-chain transmission. 

Featuring a striking structure and driving exceptionally readable indications, caliber FB-T.FC is equipped with an exclusive constant-force regulation system with suspended fusée and chain transmission, equipped with a differential winding system. It also has a highly distinctive power-reserve mechanism.

A tourbillon with central seconds hand guarantee the optimal timing adjustment of the movement, whose precision and rate accuracy is certified by the Swiss Official Chronometer Testing Institute.

When the mainspring is associated with a fusée, the barrel drum turns in one direction when the spring winds down and in the opposite direction when it is wound up, thus causing the chain to wrap around the drum. A distinctive feature of caliber FB-T.FC lies in the fact that its fusée mechanism has been equipped with an unusually designed differential gear.

The case of the Chronomètre Ferdinand Berthoud FB 1 is built according to a distinctive architecture inspired both by the Marine Clocks of Ferdinand Berthoud and by their gimbal suspension system typical of onboard chronometers.  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.