Vacheron Constantin Fiftysix self-winding

The Vacheron Constantin Fiftysix self-winding, reference 4600E/000A-B442, has a steel case measuring 40 mm across and 9.6 mm thick. The grey dial combines an opaline centre with a sunburst satin exterior, and its hour markers and hands carry luminous treatment for visibility in low light. A sapphire crystal covers the dial, and a matching sapphire caseback shows the self-winding calibre 1326 beneath it. That movement holds 48 hours of power reserve and drives a central seconds display along with a date aperture at 3 o'clock. The dark grey alligator leather strap closes with a steel folding clasp. Water resistance is rated to 30 metres.