Happy Birthday! 20 Years Chronomètre à Résonance

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For the 20th Anniversary of the Chronomètre à Résonance, F.P. Journe proposes a version with a special dial that will be produced only during the year 2019. It will be available in two versions: one with a platinum case and a white gold dial, the other entirely made out of red gold.
The Chronomètre à Résonance is imbued with a profoundly poetic depth, and remains, 18 years later, the most precise mechanical watch in F.P. Journe’s collection.

Any animate body transmits a vibration to its environment. When another body picks up this vibration, it absorbs its energy and begins to vibrate at the same frequency. The first is called the “exciter” and the second the “resonator”. This physical phenomenon known as “resonance” is an integral part of our daily life. It concerns all fields including those related to mechanical engineering and music.
Condensing a large double pendulum in the small space available in a wristwatch turned out to be a difficult task and it would take F.P. Journe decades to master it. Finally, in the year 2000, the first wrist-watch with “Resonance” was commercialized as a world premiere.

The hour dial at 3 o’clock maintains an analog 12 hour indication while the dial at 9 o’clock features for this edition an analog 24 hour indication. The two dials in silver guilloche Clous de Paris indicating the hours and minutes can also be set on two different time zones.

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Inside the 40-mm-case lies the Calibre 1499.3, a manual winding movement with two independent linear escapements and balances. Each of the two balances alternately serves as exciter and resonator. When the two balances are in motion, they enter into sympathy due to the effect of resonance and begin naturally beating in opposition. The two balances thus rest against each other, giving more inertia to their movement.
Whereas an external disturbing movement affects the running of a traditional mechanical watch, this same disturbance, in the case of resonance watches, produces an effect that accelerates one of the balances as much as it slows the other down. Little by little, the two balances come back towards each other to find their point of harmony, thus eliminating the disturbance.
The movement also provides a power reserve of approximately 40 hours.

The Chronomètre à Résonance comes on a leather strap.

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