Vacheron Constantin Overseas dual time

Vacheron Constantin's Overseas dual time, reference 7920V/210A-B334, is a steel GMT watch measuring 41 mm across and 12 mm thick. The blue dial sits under a sapphire crystal and shows central seconds and a date display alongside the second time zone indication, with luminous hands and indices for legibility in low light. Inside is the self-winding calibre 5110 DT/2, carrying the Geneva Seal and offering 60 hours of power reserve. Through the sapphire caseback the finishing of the movement is visible. The steel bracelet closes with a folding clasp in steel, and Vacheron Constantin's interchangeable system allows it to be swapped for leather or rubber. Water resistance is rated to 150 metres, a figure the folding clasp and steel case are built to maintain.