Caliber GP033M0:
- Mechanical with automatic winding
- Calibre: 11 ½ ligne
- Parts: 287
- Frequency: 28,800 vibrations / hour (4 Hz)
- Jewels: 44
- Power reserve: minimum 46 hours
- Functions: hours, minutes, small seconds, annual calendar, equation of time
- Balance wheel: variable inertia with gold regulating screws (diameter: 7.18 mm)
- Main plate: rhodium-plated, circular-grained above and below, diamond-cut facets
- Barrel: snailing on the cover, sunray-brushing on the underside
- Gear-train bridge: polished and diamond-cut facets, circular-grained on the underside, drawn sides, diamond-cut recesses, Côtes de Genève and “Girard-Perregaux eagle” engraving
- Oscillating weight: pink gold, circular Côtes de Genève
- Gear-train: gilded 2N18 wheels, burnished pivots, circular-grained sides