Vacheron Constantin Overseas chronograph

The Overseas chronograph reference 5520V/210A-B148 is a 42.5 mm round steel case watch with a blue dial and sapphire crystal. It is fitted with the automatic Vacheron Constantin calibre 5200, which includes a chronograph function, and carries a water resistance of 150 metres. The movement bears the Poinçon de Genève, a hallmark introduced by the Republic and Canton of Geneva in 1886 to certify craftsmanship and reliability.