Vacheron Constantin Traditionnelle complete calendar

Vacheron Constantin's Traditionnelle complete calendar, reference 4010T/000R-B344, is a 41 mm rose gold watch with a case measuring 10.72 mm thick. The white opaline dial sits under a sapphire crystal and shows the day and month through apertures at the rim, with a central pointer for the date. At six o'clock a moon phase completes the calendar display, driven by the self-winding calibre 2460 QCL/1 with 40 hours of power reserve. The movement carries the Hallmark of Geneva and can be viewed through a sapphire display back. Central seconds round out the indications on the dial. The watch is fitted on an alligator leather strap with a pin buckle in rose gold. Water resistance is rated to 30 metres, modest but in keeping with a dress watch of this type.