Chronométre FB 2TV.1

• Case: 18-carat white gold dynamometric crown with integrated seconds-reset pusher • 18-carat white gold screw-down case-back fitted with a domed sapphire crystal glare-proofed on both sides • Domed sapphire crystal glare-proofed on both sides • Precious metal origin: ethical gold
• Size: 44 mm x 15.46 mm thick
• Movement: Flying tourbillon with constant force via a fusee-and-chain mechanism, winding differential system placed beneath the fusee, double Maltese cross-type stopwork system, Flyback function via a crown-integrated pusher • Mechanism for stopping the tourbillon carriage activated via the winding crown in time-setting position
• Function: Hours and minutes at 12 o'clock, central seconds hand and power reserve at 7:30
• Power Reserve: 72 hr
• Water Resistance: 30 m
• Dial: Hours and minutes dial at 12 o'clock in matt white varnished brass with glossy black varnished engravings • Matt white lacquered brass seconds inner bezel ring with glossy black lacquered engravings • Power-reserve indicator engraved on the mainplate at 7:30
• Caseback: sapphire crystal, glare-proofed
• Hands: Sword-shaped, faceted, diamond-polished, openworked hours and minutes hands in blue CVD-treated 18-carat gold • Arrow-shaped power-reserve hand in diamond-polished blue CVD-treated bronze • Filamentary seconds hand in blue CVD-treated sandblasted titanium
• Strap/Bracelet: Hand-sewn, rolled-edge alligator strap (125 x 70 mm, buckle 20 mm) – Different materials, colours and sizes available on request • 18-carat white gold double-blade safety folding clasp, adjustable length – Pin buckle available on request

The Mesure du Temps 1787 collection opens a new decade for Chronométrie Ferdinand Berthoud, Inspired by Berthoud’s 1787 text on measuring time and focused on stable energy and precise setting. Its openworked design reveals the movement’s complex kinematics directly on the dial side. 

What’s new: Calibre FB-TV.FC displayed dial-side (fusee-and-chain, barrel, power-reserve cone). 15 mm flying tourbillon with central seconds. Stop-seconds + central-seconds zero-reset via crown pusher (3 o’clock).

Key technical highlights: Constant-force fusee-and-chain in a redesigned, front-readable suspended architecture. Optimised fusee + Maltese-cross stopwork: ~6.25 crown turns, 60-hour reserve, more consistent torque. Planetary differential enables winding on the run; slimmer chain and redesigned flying barrel reduce friction.

Display & case: 44 mm (15.46 mm) 18-carat white-gold case with domed, glare-proof sapphire front and back. Off-centred hours/minutes at 12, central seconds on an inner bezel ring (25.80 mm titanium filament hand), and power reserve at 7:30.

Production is limited by workshop capacity, estimated at 10–12 pieces per year.