The Calibre FB-T.FC fusée and chain tourbillon movement first debuted in 2015 and has since spawned multiple versions, including regulator layouts and moon phase complications. This new model marks the first time this movement is housed within a round case, while retaining the signature “sapphire crystal porthole” on the case flank. This allows the wearer to admire the operation of the fusée and chain constant force mechanism from a three-dimensional perspective. The crown features grid-style engraving for a comfortable setting experience.
The blue dial, finished with polished and brushed techniques, offers a particularly striking visual effect. The layout includes:
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An off-center hours and minutes sub-dial at 12 o’clock.
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The central seconds hand.
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An openworked aperture at 6 o’clock revealing the tourbillon and the seconds gear train.
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A power reserve indicator at 9 o’clock.
Flipping the watch over reveals the barrel, tourbillon, and the fusée-chain system that provides constant force to the escapement.
The watch is powered by the Calibre FB-T.FC-2 manual-winding movement, now fitted with sapphire crystal bridges to maximally display the movement’s intricate structure and hand-finishing. It maintains a frequency of 21,600 vph and offers a 53-hour power reserve.
This timepiece is available for bespoke one-to-one commissions, allowing clients to personally select the case material, dial color, and finishing techniques. It is a limited edition of 38 pieces.
Ferdinand Berthoud Chronomètre FB 2T Fusée and Chain Tourbillon Watch
White gold case, 44mm diameter, 14.3mm thickness, white gold crown, sapphire crystal, blue dial, Calibre FB-T.FC-2 manual-winding movement, 45 jewels, 21,600 vph, 53-hour power reserve, alligator leather strap, white gold buckle, 30m water resistance.
Complications: Tourbillon, Fusée and Chain Constant Force Mechanism.
