Audemars Piguet Selfwinding "50ᵀᴴ Anniversary"

The Audemars Piguet Royal Oak Selfwinding "50ᵀᴴ Anniversary", reference 15551ST.ZZ.1356ST.02, has an octagonal stainless steel case measuring 37mm with a thickness of 9.1mm and an integrated steel bracelet. The blue Grande Tapisserie dial is protected by a glareproofed sapphire crystal and displays hours, minutes, centre seconds and a simple calendar. It is powered by the selfwinding calibre 5900, offering a 60-hour power reserve, and the case is water resistant to 50 metres.