Audemars Piguet Royal Oak Collection, Complex Function Perpetual Calendar Watch Model: 26574ST.OO.1220ST.01.Noble Timepieces, the Audemars Piguet Royal Oak Collection Perpetual Calendar Watch features a noble and elegant blue dial paired with a stunning stainless steel case, perfectly embodying Audemars Piguet's aesthetic design and the high-level technology of its complex functions. The case is made of 316L stainless steel, with a diameter of 41mm and a thickness of 11.4mm.The blue dial is adorned with the Grande Tapisserie pattern, featuring a classic design with three-dimensional hour markers and faceted hands coated with luminescent material. Three sub-dials displaying calendar functions and a moon phase display are symmetrically arranged on the dial, orderly presenting the hours, minutes, day, date, week, month, and moon phase.All functions of the dial can be utilized, and the mineral crystal glass is treated with anti-reflective coating, enhancing the overall clarity and brilliance of the watch. This timepiece is truly a culmination of craftsmanship, with the reference number Ref. 26574ST.OO.1220ST.01.