Audemars Piguet Royal Oak Perpetual Calendar Ultra-Thin Ref. 26586XT.OO.1240XT.99 The Audemars Piguet Royal Oak Perpetual Calendar Ultra-Thin ref. 26586XT.OO.1240XT.99 has a 41 mm titanium case and the self-winding Calibre 5133. - Self-winding Calibre 5133, 40 h power reserve - Functions: perpetual calendar with day, date, astronomical moon, month, leap year, night and day indication, hours and minutes - Case: titanium case, BMG bezel and caseback, glareproofed sapphire crystal and caseback. Diameter 41 mm, thickness 6.2 mm, water resistant to 20 m - Dial: smoked ivory dial, vertically brushed, white gold applied special eastern-Arabic hour-markers and Royal Oak hands with luminescent coating - Titanium bracelet with BMG links, AP folding clasp Full set. Maker: Audemars Piguet. Reference: 26586XT.OO.1240XT.99. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.