The Audemars Piguet Royal Oak Double Balance Wheel Openworked, ref. 15407BA.OO.1220BA.01, is a breathtaking demonstration of high watchmaking. Crafted in full 18 ct Yellow Gold, the iconic 41 mm case and integrated bracelet radiate luxurious presence. This timepiece is defined by its masterful openworked architecture, offering an unobstructed view of the blackened Calibre 3132 movement. The technical innovation lies in the visible Double Balance Wheel mechanism , which enhances the watch's precision and stability by incorporating two balance wheels and two hairsprings assembled on the same axis. The deep anthracite inner bezel provides a striking frame for the golden movement bridges and indices. The transparent caseback further reveals the exquisite finishing and the gold oscillating weight. This Royal Oak is a bold and complex masterpiece for the discerning collector.