Audemars Piguet Selfwinding "50th Anniversary"

Audemars Piguet's Royal Oak Selfwinding "50th Anniversary", reference 77451ST.ZZ.1361ST.02, has a 34 mm steel case. The case measures 8.8 mm thick, keeping the proportions compact on the wrist. Sapphire crystal covers the blue Grande Tapisserie dial, set with diamonds. Inside is the self-winding calibre 5800, which drives hours, minutes, central seconds and a date function. The bracelet is steel, fitted with an AP folding clasp that closes flush against the case. This anniversary edition marks fifty years of the Royal Oak line, produced with a revised case design. The dial's blue tone shifts under light, a detail specific to this reference. Water resistance on this reference is rated to 50 metres.