Chronomètre FB 1.4-1

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Chronomètre FB 1.4-1

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Transparency and lightness

The concept of the Chronomètre FB 1.4 is inspired by an 18th century armillary sphere whose movement, created by Ferdinand Berthoud, indicated the time on a glass dial. The sapphire half-bridges reveal the beauty of the hand-wound Calibre FB-T.FC-2, rhodium-plated and dotted with blue accents, its pillar-type architecture and its reversed and suspended fusee-and-chain transmission mechanism. Thanks to its titanium case, this timepiece with its contemporary design weighs only 80 g, which is extremely light for such a complex timepiece.

The Chronomètre FB 1.4 is produced in two 20-piece series, a symbolic figure linked to the history of Ferdinand Berthoud, who received an order in 1770 for 20 marine chronometers that would make a vital contribution to the success of major exploration campaigns.

Features

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The case consists mainly of three parts: the case, a grade 5 titanium cylinder housing the movement; two polished titanium side pieces shaped like half-hexagons; and the lugs in grade 2 titanium. Once these are all screwed together by two stylised blackened titanium bolts, the watch's identity is defined by its characteristic octagonal shape.
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The light pouring through the case-back magnifies the beauty of the movement, in particular the fusee-and-chain transmission mechanism, thanks to the transparency of three sapphire half-bridges that the artisans of Chronométrie have patiently chamfered and sandblasted on the sides – two very delicate finishes that are extremely hard to achieve.
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The Chronomètre FB 1.4 is based on the armillary sphere made by the engineer and geographer Louis-Charles Desnos (1782). Housing a movement signed Ferdinand Berthoud, this extremely rare object displayed the time on a domed glass dial and gave the in-house engineers the idea of adorning the movement of the Chronomètre FB 1.4 with sapphire bridges.

Chronomètre FB 1.4-1 in details

Case
Case
    • Diameter: 44 mm
    • Thickness: 13 mm
    • Water resistance: 30 m
    • Dynamometric crown in titanium with black ceramic medallion
    • Octagonal case fitted with two watertight portholes in glareproofed sapphire crystal
    • Case in titanium (Grade 5) with titanium (Grade 2) lugs elements
    • Screw-in case-back with glareproofed sapphire crystal
    • Domed, arched and glareproofed sapphire crystal
    • 20-piece limited and numbered edition
Movement
    • CALIBRE FB-T.FC-2
    • Mechanical hand-wound movement
    • Tourbillon with constant force device with fusee-and-chain transmission
    • 3 sapphire half-bridges
    • Diameter: 35.50 mm
    • Thickness: 7.96 mm
    • Lines: 15 ¾
    • Number of jewels: 45
    • Frequency: 21,600 vph (3 Hz)
    • Power reserve: 53 hours
    • Number or parts : 1119
    • Chain length : 285 mm
    • Chronometer-Certified by the COSC
Dial and hands
    • Grained galvanized and lacquered black dial with cut-out centre
    • 18-carat white gold hours and minutes hands
    • 18-carat blued (CVD) gold power-reserve hand
    • Rhodium-plated bronze 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
    • Titanium double-blade length-adjustable safety folding clasp
Chronomètre FB 1.4-1 Chronomètre FB 1.4-1
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