Audemars Piguet Royal Oak Selfwinding Chronograph "One Drop" Ref. 26240CE.OO.1225CE.98 The Audemars Piguet Royal Oak Selfwinding Chronograph "One Drop" ref. 26240CE.OO.1225CE.98 has a 41 mm black ceramic case and the self-winding Calibre 4401. - Self-winding Calibre 4401, 70 h power reserve - Functions: flyback chronograph, hours, minutes, small seconds and date - Case: black ceramic case, glareproofed sapphire crystal, titanium sapphire caseback, black ceramic pushpieces and screw-locked crown. Diameter 41 mm, thickness 12.4 mm, water resistant to 50 m - Dial: blue dial with a strong vertical satined-finish, blue snailed counters, blackened gold applied hour-markers and Royal Oak hands with luminescent coating - Black ceramic bracelet with AP folding clasp Full set. Maker: Audemars Piguet. Reference: 26240CE.OO.1225CE.98. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.