Vacheron Constantin Fiftysix self-winding

Vacheron Constantin's Fiftysix self-winding, reference 4600E/110A-B487, measures 40 mm in steel and stands 9.6 mm thick. The petrol blue dial has an opaline centre and a sunburst satin exterior, with a date aperture at 3 o'clock, and sits under a sapphire crystal. Gold hour and minute hands and hour markers carry blue luminescent treatment for legibility in low light. Inside is the self-winding calibre 1326, with 48 hours of power reserve and a central seconds function. The transparent sapphire caseback shows the finishing of the movement and its gold oscillating weight, shaped after a Maltese cross. The watch is fitted to a steel bracelet closed with a folding clasp. Water resistance is set at 30 metres.