Vacheron Constantin Overseas self-winding

The Overseas self-winding 4520V/210A-B128 is a round steel watch with a 41 mm case and a blue dial. It is fitted with a sapphire crystal, a screw-down crown, and a display back, and is water resistant to 150 metres. The watch is powered by the automatic Vacheron Constantin calibre 5100, which carries the Poinçon de Genève, a hallmark introduced by the Republic and Canton of Geneva in 1886 to certify watchmaking quality and craftsmanship.