Octa Réserve de Marche: The first Octa model, displays two-figure date, the 120 hours of power reserve indicator, the hours, minutes and small seconds on F.P.Journe’s trademark regulator dial.
The robust, multi-purpose Octa is F.P.Journe’s most highly evolved construction. With different complicated mechanisms built into movement, the Octa five-day automatics always measure 30 mm x 5.5 mm. It’s rare to find a watchmaker with a spatial vision to imagine a single complex chassis that integrates very different mechanisms without changing its size. It is also the first automatic movement with a power reserve that maintains precision timekeeping for five days (120 hours) off the wrist.
Octa Chronographe : The Octa Chronographe is revolutioninsing the classical conception of a chronograph. Integrated within the Octa automatic sinding calibre measuring 30 mm in diameter and 5.7 mm in thickness, the chronograph is housed in a space just 1 mm thick. To achieve such a performance, François-Paul Journe imagined flattening the usual column wheel to transform it into a cam wheel.
It is fitted with a fly-back and return-to-zero functions, as well as a 60-minute counter. The date is shown on the dial by large-sized separate numerals, according to a patented display mode. The guilloché silver hour, minute and small seconds subdials are screwed to the 18-carat gold watch face.