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Revisiting the Ferdinand Berthoud spirit
Issued in an exclusive 50-piece series, the Chronomètre FERDINAND BERTHOUD FB 1.1 is the first model in the collection. Its vertical satin-brushed ruthenium dial is framed by an octagonal white gold case with titanium 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.

Features



Chronomètre FB 1.1 in details

Movement
- CALIBRE FB-T.FC
- Mechanical hand-wound movement
- Tourbillon with constant force device with fusee-and-chain transmission
- Diameter: 35.50 mm
- Thickness: 7.96 mm
- Lines: 15 ¾
- Number of jewels: 46
- Frequency: 21,600 vph (3 Hz)
- Power reserve: 53 hours
- Number or parts: 1120
- Chain length: 285 mm
- Chronometer-certified by the COSC
Dial and hands
- Vertical satin-finish ruthenium dial with cut-out centre
- 18-carat blued (CVD) gold hours, minutes and power-reserve hands
- Bronze blued (CVD) seconds hand
Functions and display
- Display of the hours, minutes at 12 o’clock
- Central seconds
- Power-reserve display in an openworked subdial at 9 o’clock
- Tourbillon at 6 o’clock
Strap and buckle
- Hand-sewn rolled-edge alligator leather strap
- 18-carat white gold double-blade length-adjustable safety folding clasp

