The Octa movement was introduced in 2001, which was the third caliber made by F.P. Journe following the introduction of the Tourbillon Souverain and the Chronomètre à Résonance. It was the brand's first automatic mechanism designed by the brand. The Octa Réserve de Marche and the Octa Lune were the two models that were released with this module.

Displaying a power reserve, big date and moon phase indications, the Octa Lune was launched in 2003 and won the “Best Men’s Watch” award, in the same year, at the Grand Prix d’Horlogerie de Genève (GPHG) - the most prestigious award ceremony in the watch industry. The moonphase on the left-hand side of the dial, offers a balance to the offset subdial displaying the hour and minute. If you look carefully, the actual moon aperture is poetically crafted in the shape of a crescent moon itself, rotated 90 degrees horizontally.

While the earliest versions came in a 38 millimeter diameter, the next generation was available in a 40 millimeter case, such as the present watch. Displaying a rose gold movement, the watch display a pink gold case with pink gold dial, giving it a strong monochromatic appearance. It is furthermore offered as a full set with its Certificate of Authenticity dated December 27, 2007, product literature, cloth, presentation box and outer packaging.