Vacheron Constantin Traditionnelle perpetual calendar ultra-thin

The Traditionnelle perpetual calendar ultra-thin, reference 4300T/000R-H107, is a 36.5mm round case in rose gold with a white dial and sapphire crystal. It carries the Poinçon de Genève, the Geneva Hallmark introduced in 1886 by the Republic and Canton of Geneva as a standard for fine watchmaking. The watch is powered by the automatic Vacheron Constantin calibre 1120 QP and includes a perpetual calendar with date, month, year and moon phase functions. The case back is a display back, allowing the movement to be viewed.