Circa 38 hours (±10%).
FREE SPRUNG BALANCE WITH VARIABLE INERTIA
A free sprung balance with variable inertia and a terminal-curve spring (originally designed for pocket watches) guarantees greater reliability in case of impacts and perfect centering of the tourbillon’s balance wheel, thus providing better chronometric results over time.
FAST ROTATING BARREL (6 hours per revolution instead of 7.5 hours)
This type of barrel has the following advantages:?- The phenomenon of periodic internal mainspring adhesion is significantly diminished and performance is thus enhanced, - It provides an excellent delta of the mainspring curve with a power-reserve/performance/regularity ratio.
BARREL PAWL WITH PROGRESSIVE RECOIL
This device permits an appreciable winding gain (circa 20 %), especially during the start of winding. It also promotes the even distribution of the mainspring’s internal tension.
WINDING BARREL TEETH AND CENTRE-WHEEL PINION WITH CENTRAL INVOLUTE PROFILE
The central involute profile of the winding barrel teeth provides an optimal pressure angle of 20°, which promotes effective rotary motion and compensates for possible variations in the operation of the going train. This, in turn, ensures excellent torque transmission and a distinct improvement in performance.
In titanium, with a black galvanic treatment and index filled with an approved luminescent material.
FRONT AND BACK BEZELS
In sapphire (1,800 Vickers) with anti-glare coating (on both sides) Thickness: 2.50 mm
- Hand-polished beveling
- Hand-polished locking-sections
- Microblasted milled sections
- Lapped and polished contact points - Burnished pivots
- Wire-drawn and microblasted surfaces - Hand-polished beveling
- Drawn outer faces
- Ribbed centre bridges with opaque indentations, polished on both sides then treated with an anti-reflective coating
- Concave chamfering with a diamond tool
- Circular-decorated faces
- Gilding (before cutting the teeth)
- Minimal corrections to preserve the geometry of the wheels and their performance
50.50 x 42.70 x 16.75 mm
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