The star model in the collection – unsurprisingly the Octa Réserve – underwent an evolution in 2007. While the functions remained identical – the power reserve clearly indicated by a retrograde hand, along with the hours, minutes, small seconds and large date –, the dial configuration was changed, with the hours and minutes switching from an offset right-hand position to a central display. The new face featured the brand’s typical ‘drop-shaped’ hands and Arabic numerals, the latter showing a subtle change of size. This evolution, which provided the enhanced legibility requested by customers, was matched by a bid to perfect the movement, particularly the automatic winding. François-Paul Journe had observed that winding was not fully effective when the watch was worn by relatively inactive people, such as those working on computers. Thanks to the latest-generation 1300-3 calibre, every single wrist movement, however slight, is harnessed. 

Housed in a platinum or red gold case, as is the custom at F.P. Journe – Invenit et Fecit, the Octa Automatique Réserve was produced between 2007 and 2018, with the silver dial with a central Clous de Paris hobnail pattern that was introduced in 2007 and, since 2014, as a gold version. The Octa collection comprises models with additional complications such as moon phases, dual-time indication and a perpetual calendar, as well as jewellery pieces and boutique-exclusive creations.