The F P Journe Chronometre Souverain was inspired by early 19th century marine chonometry. Manually wound, 13 lignes x 3.7 mm, 21,600 vibrations/hour, Journe free-sprung chronometer balance in parallel giving 56 hours power reserve (indicated). Mystery balance with going-train under the dial. Bridges and wheels in 18K Pink Gold. True manufacture movements in Limited Edition from what some believe is the greatest living watch maker.