POWER, MAGIC AND TECHNICITY
Manual winding tourbillon movement
Hours, minutes and power-reserve indicator.
Power reserve : Circa 48 hours (± 10%).
Dimensions : 45 x 38,30 x 12,25 mm
Onyx is a variety of cryptocrystalline quartz chalcedony composed of silica (SiO2). The rectilinear black and white parallel stripes is classified with agate types. The fully black type is called black onyx and is said to deflect harmful energy down to the earth, while providing stability.
For this reason, black onyx is considered a charm-stone against spells.
Black onyx also symbolises equilibrium and inspiration.
Movement dimensions: 30.20 x 28.60 mm
Thickness: 4.97 mm
Tourbillon diameter: 12.30 mm
Balance wheel diameter: 9.12 mm
Number of jewels: 21, set in white gold chatons
Balance wheel: Glucydur® 2 arms, 4 setting screws, moment of inertia 10 mg•cm2, angle of lift 53º
Frequency: 21,600 vph (3 Hz)
Balance spring: elinvar by Nivarox®
Shock protection: KIF Elastor KE 160 B28
Barrel shaft: nickel-free Chronifer® (DIN x 46 Cr 13 + S) with the following characteristics: stainless – antimagnetic - suitable for tempering
These components are in grade 5 titanium with black PVD treatment. This provides great rigidity to the whole assembly, as well as the precise surface flatness essential for perfect functioning of the gear train.
The power-reserve indicator is displayed using a differential power reserve system with a printed red line on a moving disc located between 10 and 11 o’clock.
This mechanism guarantees greater reliability when subjected to shock and also during movement assembly or disassembly, hence better chronometric results over time. The regulator index is eliminated and a more accurate and repeatable calibration is possible thanks to 4 small, adjustable weights located directly on the balance.
• Anglage and polishing by hand (excluding onyx and black treated parts)
• Locking sections hand polished
• Sapphire-blasted milled sections
• Lapped and polished contact points
• Burnished pivots
• Sapphire-blasted surfaces
• Satin-finished surfaces
• Anglage and polishing by hand
• Burnished sections
• Concave chamfering with a diamond tool
• Circular-finished faces
• Rhodium plating (before cutting the teeth)
• Minimal correction applied to the wheels in order to preserve geometry and performance
BARREL PAWL WITH PROGRESSIVE RECOIL
This device permits an appreciable winding gain (circa 20%), especially during the start of winding. It also aids in the even distribution of the mainspring’s internal tension.
FAST-ROTATING BARREL (6 hours per revolution instead of 7.5 hours)
This type of barrel provides the following advantages:
SPLINE SCREWS IN GRADE 5 TITANIUM FOR THE BRIDGES AND CASE
This permits better control of the torque applied to screws during assembly. These screws are therefore unaffected by physical manipulation during assembly or disassembly and age well.