BBR Audemars Piguet Royal Oak series, complex function perpetual calendar watch. Model 26574ST.OO.1220ST.03 is the only one in the industry that realizes the original function. Noble watch Audemars Piguet Royal Oak series perpetual calendar watch, noble and elegant blue plate with cool stainless steel watch The case perfectly reflects the extremely high technology of Audemars Piguet's aesthetic design and complex functions. The case is made of 316L stainless steel, with a diameter of 41 mm and a thickness of 11.4 mm. The blue dial is engraved with "Grande Taisserie" large plaid decoration, blue dial, three-dimensional time The markers and faceted hands are covered with luminous coating. Three sub-dials showing the calendar function and the moon phase display are symmetrically distributed on the dial, showing hours, minutes, day of the week, date, weekly calendar, month, and month in an orderly manner. Phase and leap year information. The only real version. Sapphire anti-glare treatment makes the overall watch more transparent and bright. Equipped with 9015 one-to-one modified and customized restoration of Caliber 5134 self-winding movement. It can be called a graduate product. The number of this watch It is Ref. 26574ST.OO.1220ST.03,