Vacheron Constantin Traditionnelle perpetual calendar chronograph

Vacheron Constantin's Traditionnelle perpetual calendar chronograph, reference 5000T/000P-B975, is a chronograph in a 43 mm platinum case. The case measures 12.94 mm thick, and the salmon opaline dial sits under a sapphire crystal. Inside is the manual-winding calibre 1142 QP, bearing the Hallmark of Geneva and offering 48 hours of power reserve. Beyond the chronograph function, the watch carries a perpetual calendar with moon phase, the 950 platinum moon disc set against a frosted starry background with day and month shown in apertures. A sapphire caseback displays the movement. The alligator leather strap closes with a platinum folding clasp. Water resistance is a modest 30 metres, enough for everyday knocks rather than immersion.