Audemars Piguet Selfwinding "50th Anniversary"

Audemars Piguet's Royal Oak Selfwinding "50th Anniversary", reference 15551ST.ZZ.1356ST.02, has a 37mm steel case. The case measures 9.1mm thick and carries a sapphire crystal over a blue dial. This is a women's model set with diamonds, marking the fiftieth anniversary of the Royal Oak line. Inside is the self-winding calibre 5900, a movement that drives central seconds and a date function. Audemars Piguet finishes the oscillating weight to reference the anniversary, a detail specific to this reference within the collection. The dial pairs with a steel bracelet fitted with a folding clasp. Water resistance on this reference is rated to 50 metres.