This hand-wound movement bearing the Hallmark of Geneva is equipped with an oscillating weight featuring the particularly meticulous finishing that is the signature of fine watchmaking. Beating at a frequency of 2.75 Hz (19,800 vibrations per hour), it has an approximately 40-hour power reserve. Calibre 1120 QP SQ drives indications of the hours, minutes and perpetual calendar featuring the day of the week in a subdial at 9 o’clock, the date in a subdial at 3 o’clock, the month and leap year on a 48-month subdial at 12 o’clock, and the moon phase at 6 o’clock. It is hand-skeletonized.

7 other watches in the library run the Vacheron Constantin 1120 QP SQ.

Vacheron Constantin - 43172/000R-9241 Traditionnelle Perpetual Calendar Openworked

Ref. 43172/000R-9241 · 39 mm

Vacheron Constantin - 4300V/120G-B946 Overseas Ultra-Thin Perpetual Calendar White Gold / Skeleton

Ref. 4300V/120G-B946 · 41.5 mm

Vacheron Constantin - 4300V/220R-B547 Overseas Ultra-Thin Perpetual Calendar Pink Gold / Skeleton / Bracelet

Ref. 4300V/220R-B547 · 41.5 mm

Vacheron Constantin - 4300V/120R-B547 Overseas Ultra-Thin Perpetual Calendar Pink Gold / Skeleton / Bracelet

Ref. 4300V/120R-B547 · 41.5 mm