Breguet Classique Répétition Minutes 7637

Breguet's Classique Répétition Minutes 7637, reference 7637BR/12/9ZU, comes in a rose gold case measuring 42 mm across. The case stands 12.3 mm thick, with lugs set at 22 mm apart, and carries a sapphire crystal over a silver guilloché dial. Inside is the manual-winding calibre 567.2, which offers 40 hours of power reserve and drives both a minute repeater and a small seconds display. A discreet lever between 8 and 10 o'clock activates the striking mechanism, which sounds the hours, quarters and minutes on a spring blade rather than a bell gong. The sapphire caseback exposes this construction to view. Breguet fits the watch to an alligator leather strap secured by a rose gold folding clasp. Breguet notes this piece is not waterproof.