Vacheron Constantin Patrimony perpetual calendar ultra-thin

The Patrimony perpetual calendar ultra-thin, reference 43175/000R-B519, is a 41mm round case in rose gold with a blue dial and sapphire crystal. It carries the Poinçon de Genève, the Hallmark of Geneva established in 1886 to certify quality craftsmanship and provenance. The watch is powered by the automatic Vacheron Constantin calibre 1120 QP, offering 40 hours of power reserve and 30 metres of water resistance. Functions include a perpetual calendar with moon phase, date, weekday, month and small seconds displays.