This Royal Oak unites two of Audemars Piguet's defining talents, the art of openworking and the patented Double Balance Wheel, in a warm, all-yellow-gold composition. Twin balance wheels and hairsprings share a single axis to improve rate stability and consistency, a clever innovation displayed openly through the skeletonized dial. Rendered entirely in yellow gold, from case and bracelet to the movement's bridges themselves, the watch glows with a tonal harmony that few openworked designs achieve so completely. The 37mm case and integrated bracelet are crafted entirely in 18-karat yellow gold, the octagonal bezel secured by eight hexagonal screws in the unmistakable Royal Oak manner. In place of a dial sits the fully openworked movement, its bridges and mainplate finished in gold and hand-beveled to catch the light, with the double balance wheel on show. Applied gold markers and hands rise above the mechanism, keeping time legible amid the golden intricacy.