Page 9 of Collection Octa by F.P.Journe

octa réserve de marche bidirectional oscillating weight in 22-carat gold high-capacity barrel large-size chronometer balance rating inertia-blocks this movement provides steady and significant force thanks to a one-metre long spring supplying 850g of torque to the mechanism with only 25 loss of amplitude when its power-reserve is exhausted the watch will nonetheless continue to run for around thirty hours after the five days but without ensuring the same precision timekeeping moreover its fast winding mechanism designed to ensure high efficiency works in both directions on a classic simulator chappuis cyclo-test the mechanism is rewound in just one and a half hours such a performance should enable the wearer of the watch to maintain sufficient power-reserve merely through day-to-day gestures nonetheless prolonged periods of inactivity will lead to a depletion of the initial amount of energy this original and perfectly balanced construction by françois-paul journe has managed to attain the maximum useful power-reserve for a automatic winding movement without compromising precision the octa calibre is the result of an optimal balance between force capacities and efficiency it ensures watches within the octa collection offer an unprecedented level of reliable precision 52

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