Calibre Royal, Manufacture movement with dual direction automatic winding, 21,600 vibrations/hour (3 Hz), Initial force distribution by a central barrel axis, large balance with compensating screws in solid gold, 220°amplitude in vertical position after 72-hours operation.
88-hour power reserve design, dial display with 72-hour guaranteed isochronism. Integrated complications.
Small seconds at 4 o’clock symmetrical to power reserve.
Movement finish: bridges and main plate circular-grained and snailed, with Côtes de Genève.
Oscillating weight with sunray finish and rhodium plating, gilt "Fleur de Lys" logo.