Breguet Classique Double Tourbillon Quai de l'Horloge 5345

Breguet's Classique Double Tourbillon Quai de l'Horloge 5345, reference 5345PT/1S/9XU05, comes in a 46 mm platinum case. The case measures 16.9 mm thick, with lugs set at 23 mm apart. A sapphire crystal covers the gold dial, and a sapphire caseback shows off the manual-winding calibre 588N1, its power reserve rated at 60 hours. Two independent tourbillons drive a central differential and share a single bridge that doubles as the hour hand, an arrangement finished by hand and paired here with a central seconds display. The mechanism completes a full rotation every twelve hours while each tourbillon cage turns once per minute. An alligator leather strap closes with a platinum folding clasp. Breguet rates the case to 1.6 bar, a depth better suited to display than diving.