The new Patrimony perpetual calendar ultra-thin
The 1120 QP calibre developed and crafted by Vacheron Constantin drives the indications of the hours, minutes, moon phase at 6 o’clock and perpetual calendar with day of the week in a counter at 9 o’clock, date in a counter at 3 o’clock, as well as month and leap year on 48-month counters at 12 o’clock.
Recognised by connoisseurs as one of the most iconic perpetual calendars on the market, it can cope with all the vagaries of the calendar without any corrections until March 1st 2100. Unlike simple calendars that require manual adjustment after each month of less than 31 days, the perpetual calendar takes account of the leap-year cycle, with its 31, 30 or 28-day months and the quadrennial return of February 29th. In a final touch, the moon phase display, adorned in champlevé enamel whose colour is only revealed after ultra-precise firing at very high temperature (approx. 1000°C), evokes the beauty of life’s most beautiful nights.
The perpetual calendar complication requires miniaturisation prowess in that the movement must be mechanically adjusted to deal with calendar irregularities. This miniaturisation has been pushed to the limit in order to create an ultra-thin perpetual calendar, with Vacheron Constantin’s Calibre 1120 QP measuring a mere 4.05 mm thick. This feat of engineering with its openwork Maltese cross-shaped oscillating weight comprises no less than 276 components. The latter proudly display their exceptional level of finishing through the transparent sapphire crystal caseback of the watch. Finally, the steady beating of its heart at a rate of 2.75 Hz (19,800 vibrations per hour) ensures the precision of the movement as well as its 40-hour power reserve.
Introduced with a pink gold case that makes a perfect match with the sunburst satin-finished blue shade of the dial, and equipped with a folding clasp, this watch naturally conveys the personality of its owner: a timelessly elegant aesthete who matches his appearance with the dark blue of the alligator leather strap, of which the back is also lined with the same leather in an ultimate touch of refinement.