Vacheron Constantin Overseas perpetual calendar ultra-thin skeleton

Vacheron Constantin's Overseas perpetual calendar ultra-thin skeleton, reference 4300V/220R-B547, is a men's watch in rose gold measuring 41.5 mm across. The case stands 8.1 mm thick, slim for a perpetual calendar, and pairs with a silver dial under a sapphire crystal. Inside is the self-winding calibre 1120/3 QPSQN/1, skeletonized and bearing the Geneva Seal, with 40 hours of power reserve. The perpetual calendar tracks the four-year cycle, month and weekday, and is finished with a moon phase showing a starry sky and gold moons. Hands and indices carry luminous treatment for visibility. A sapphire caseback exposes the movement's open-worked architecture. The watch is fitted to a rose gold bracelet with a folding clasp in rose gold, and Vacheron Constantin rates the case to 50 metres.