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The Calibre Octa: A Horological Ideal
The Calibre Octa: A Horological Ideal
The Calibre Octa by F.P.Journe represents an ideal in horology, aiming for the highest precision and autonomy in timekeeping. Unlike constant-force or resonance models, the Octa focuses on extending the running duration of wristwatches. Historically, church clocks ran for a month due to their large driving weights. In wristwatches, the mainspring size is limited, so watchmakers added an extra wheel to the gear train to extend duration. However, this often resulted in low energy reaching the balance, leading to unstable precision.
F.P.Journe tackled this by increasing the spring’s capacity while maintaining stability. The spring, measuring 1 meter and 1 millimeter thick, allows for extremely fast automatic winding, achieving over five days of running time with just one and a half hours of winding on a Chappuis Cyclotest. This innovation ensures consistent energy delivery and precise timekeeping, embodying the horological ideal of the Calibre Octa.
F.P.Journe Automatique
Ref.Rabat:
P114300220
F.P.Journe Classique Automatique watch with automatic movement and caliber 1300.3. This model’s main functions include small seconds at 4:30, a large date, and a power reserve indicator at 7:30. The 40 mm diameter platinum case is water-resistant up to 30 m. The white gold and whitened guilloché silver dial features blued steel hands, accompanied by a leather strap with a buckle clasp.
Features
Functions
Calendars, Power Reserve
Automatic
Automatic
Calibre 1300.3
Case
Material
Platinum
Case
Round
Water resistance
30 m
Diameter
40 mm
Dial
Dial colour/material
Whitened guilloché Silver
Bracelet
Leather
Leather
Clasp type
Foldover
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01.
01.
The Calibre Octa: A Horological Ideal
The Calibre Octa: A Horological Ideal
The Calibre Octa by F.P.Journe represents an ideal in horology, aiming for the highest precision and autonomy in timekeeping. Unlike constant-force or resonance models, the Octa focuses on extending the running duration of wristwatches. Historically, church clocks ran for a month due to their large driving weights. In wristwatches, the mainspring size is limited, so watchmakers added an extra wheel to the gear train to extend duration. However, this often resulted in low energy reaching the balance, leading to unstable precision.
F.P.Journe tackled this by increasing the spring’s capacity while maintaining stability. The spring, measuring 1 meter and 1 millimeter thick, allows for extremely fast automatic winding, achieving over five days of running time with just one and a half hours of winding on a Chappuis Cyclotest. This innovation ensures consistent energy delivery and precise timekeeping, embodying the horological ideal of the Calibre Octa.
