F.P.Journe Chronomètre Optimum Black Label 40mm

F.P. Journe Chronomètre Optimum Black Label is an elite horological masterpiece that represents the absolute pinnacle of François-Paul Journe’s lifelong research into chronometric precision. Encased in a beautifully polished 40mm platinum case. It features the collection's signature, high-contrast matte jet-black dial accented by an off-center, silvered guilloché main time display with traditional blued steel hands. An open aperture at the 11 o'clock position reveals the fascinating, constantly reloading mechanism of a one-second titanium constant-force remontoire (Remontoir d'Égalité), which regulates the energy transfer from the parallel twin mainspring barrels. The dial is further populated by a subsidiary small seconds register at 9 o'clock and a distinct power reserve indicator spanning 40 to 0 hours near the bottom left. Beating inside is the hand-finished, in-house Calibre 1510 manual-wind movement crafted from solid 18K rose gold.