Audemars Piguet Royal Oak Perpetual Calendar Ref. 26579CB.OO.1225CB.01 The Audemars Piguet Royal Oak Perpetual Calendar ref. 26579CB.OO.1225CB.01 has a 41 mm white ceramic case and the self-winding Calibre 5134. - Self-winding Calibre 5134, 40 h power reserve - Functions: perpetual calendar with week indication, day, date, astronomical moon, month, leap year, hours and minutes - Case: white ceramic case, glareproofed sapphire crystal and caseback, screw-locked crown, water-resistant to 20m. Diameter 41 mm, thickness 9.5 mm, water resistant to 20 m - Dial: blue dial with “Grande Tapisserie” pattern, silver-toned counters, white gold applied hour-markers and Royal Oak hands with luminescent coating, blue inner bezel - White ceramic bracelet with AP folding clasp in blackened polished steel Full set. Maker: Audemars Piguet. Reference: 26579CB.OO.1225CB.01. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.