F.P. Journe Chronomètre à Resonance 10th Anniversary Edition

Chronomètre à Resonance is an emblematic timepiece that will significantly mark the research on precision made by master watchmaker François-Paul Journe. Introduced in 2001 for the first time, this unique watch represents one of the wildest challenges ever in the field of the mechanical watch. Utilising the natural resonance phenomenon, this exceptional mechanism revolutionized the classic standards of watch-making by offering an unequalled precision for a wristwatch.

In 2004, F.P. Journe introduced a second version for the Chronomètre à Résonance with the introduction of the first movement ever made in 18K rose gold, a specification that would from then on apply to all the precision chronometers of the brand.

In 2010, F.P.Journe added a new face to the renowned Chronomètre a Résonance, acclaimed by collectors and professionals of the brand worldwide. In an ultimate quest for precision, the dial at 9h now offers a time indication of 24 hours, defining precisely the hours of day and those of night. The dial at 3h in silver guilloche indicates the local time but can also be used for the same time zone. Hardly a small modification for the subtle 18K rose gold mechanism with its two perfectly synchronised beating mechanical hearts that are revealed through a sapphire crystal case-back: there is now a different gear transmission making the hands turn in 24 hours instead of 12 hours.

The Chronomètre a Résonance Anniversary Edition is available in two versions: one with a platinum case and white gold dial and the other all in red gold. The two dials in silver guilloche indicating the hours, minutes and seconds are secured on the 18K gold dial by polished steel rings, a patent by F.P.Journe.

Technical details
Movement
Calibre 1499.3
Manual winding
Movement in 18K rose gold
36 jewels

Movement dimensions
Overall diameter: 32.60mm
Casing-up diameter: 32.00mm
Overall height: 4.20mm
Height of winding stem: 2.59mm
Diameter of stem thread: S1.00mm
Diameter of reset to zero stem : S1.20mm

Characteristics
2 x linear escapements, 15 teeth
2 x balances with 4 inertia weight
2 x flat microflamed Anachron balance Spring
2 x mobile stud carriers
2 x free sprung balance springs
2x spring laser pinned to Nivatronic collets
Pinned GE studs
2 position winding crown
Reset to zero button for seconds
Frequency: 21,600v/h (3Hz)
Balance: Inertia 10.10 mg/cm2
Angle of lift: 52°
Amplitude: 0h dial up: > 320°; 24h dial up: > 270°

Main features
Manual winding, 27 turns of crown
Time adjustment at 12h for left dial by winding crown on position 2 in one direction, and in the opposite direction for right dial
Reset both seconds to zero by pulling button at 4h00
Power Reserve: 40 hours + 2

Indications
Left dial –digital- indicating 24 hours
Right dial –analogic- indicating 12 hours
2 small seconds at 6h00
Power reserve at 11h00

Finishing
High quality
Partial circular graining on baseplate
Screw heads polished and bevelled, with chamfered slots
Pegs with polished rounded ends

Case
Platinum or 18K red gold
Diameter: 38.00 or 40.00mm
Total height: 9.00mm

Number of Parts
Movement without dial: 299
Cased up with strap: 336

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