Vacheron Constantin Overseas dual time

Vacheron Constantin's Overseas dual time, reference 7920V/210A-B546, is a GMT watch with a 41 mm steel case. The case measures 12 mm thick and carries the Genevian Seal, a mark of finishing quality applied to the movement. A sapphire crystal covers the black dial, and a matching sapphire caseback shows off the self-winding calibre 5110 DT/2, which runs at 60 hours of power reserve. Beyond the second time zone display, the watch has central seconds and a date function, with luminous hands and indices for low-light reading. The steel bracelet closes with a folding clasp, and the case is interchangeable with alternative straps. The case is rated to 150 metres, suited to swimming and everyday wear.