Breguet Classique Calendrier 7337

Breguet's Classique Calendrier 7337BB/Y5/9VU is a 39 mm case in white gold. The case measures 10 mm thick, with lugs set 20 mm apart, and the dial sits under a sapphire crystal. Inside is the self-winding calibre 502.3 QSE1, giving 45 hours of power reserve. The blue dial is hand-guilloché, worked on a rose engine, and shows a moon phase alongside a date and central seconds. A sapphire caseback lets the finishing of the movement show through. The watch is fitted on an alligator leather strap with a folding clasp in white gold. Water resistance is modest: Breguet rates the case to 30 metres.