Vacheron Constantin Patrimony perpetual calendar ultra-thin

The Patrimony perpetual calendar ultra-thin, reference 43175/000R-9687, is a 41mm round case in rose gold with a white dial and sapphire crystal. It carries the Poinçon de Genève, a hallmark introduced by the Republic and Canton of Geneva in 1886 to certify watchmaking craftsmanship and quality. 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 date, weekday, and month displays, along with moon phase and small seconds indications.