Chronomètre à Résonance 20th Anniversary

From F.P. Journe -

Courtesy of F.P. Journe

Twenty years on, this is the latest iteration of the Chronomètre à Résonance.

Courtesy of F.P. Journe

Here are the pertinents, straight from the source -

Movement 
Calibre 1520 in 18 K rose Gold Manual winding / 31 turns of crown

Dimensions
Overall diameter: 34.60 mm

Casing-up diameter: 34.20

Overall height: 7.97
Height of winding stem: 3.39

Diameter of stem thread: S1.20 mm

Balance
2 Independent linear escapements,15 teeth
2 Independent balances with 4 inertia weights 2 Flat micro-flamed Anachron balance springs 2 Mobile stud carriers
Free sprung
2 Springs laser pinned to Nivatronic collets
2 Pinned GE studs
Frequency:  21’600 v/h, 3Hz
Inertia:  10.10 mg*cm2Angle of lift:  52°Amplitude:  

0 h dial up: > 260° 

24 h dial up: > 260°

Dial
18 K white or 6N Gold and whitened Silver hour dials with guilloché clous de Paris

Case
Platinum or 18 K 6N Gold Diameter:  

40 or 42 mm
Total height:  

11 mm