or Charles Girardier, a historical object supplies the starting point for each collection. Plénitude takes its cue from the winding key of a Girardier l’aîné pocket watch, shaping both its crown and the thinking behind an unusual power-reserve mechanism.

Presented at Watches and Wonders Geneva 2026, the collection introduces the maison’s first fully in-house-developed manufacture movement. Engineered with independent watchmakers Cyrano Devanthey and Dominique Buser at its Buchs workshop, it powers two references sharing a 39.5mm steel case.

The Volcano Power Reserve translates stored energy through a truncated cone travelling along a vertical screw. It descends during winding and rises as the mainspring unwinds. A feeler arm follows its position, transmitting this movement to a hand indicating the reserve along the dial’s twelve-to-six axis.

The PL1 pairs this display with faceted dauphine-style hands, trapezoidal indexes and small seconds. White Pearl, Champagne and Majestic Purple dials offer three interpretations. The PL2 adds a moon phase within the small-seconds subdial, with exclusive Roman numerals and Pearl White or Blue Ocean finishes. Its titanium moons are laser-engraved from astronomical imagery; the display accumulates one day’s error in 122 years.

The hand-wound CG PL1 and CG PL2 calibres operate at 3Hz and provide 60 hours of autonomy. A variable-inertia balance accompanies hand-bevelled bridges, Côtes de Genève and a mirror-polished crown wheel. Each movement bears the proprietary CG Seal, covering precision, hand-finishing and traditional methods.

Price: CHF 17,800-19,800 (incl. VAT)

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