The Audemars Piguet Royal Oak Double Balance Wheel Openworked reference 15416CE.OO.1225CE.01 is a 41mm luxury sports watch crafted from black ceramic. This model features a slate grey openworked dial that showcases the movement’s intricate mechanics, including the patented double balance wheel mechanism. The case has a thickness of 9.7mm and is protected by glareproofed sapphire crystal on both the front and the exhibition caseback. It is paired with an integrated black ceramic bracelet featuring an AP folding clasp and offers a water resistance of 50 meters.
The watch is powered by the self-winding Calibre 3132, which consists of 245 parts and operates at a frequency of 3 Hz. Its primary technical complication is the double balance wheel and balance-spring assembly on the same axis, a system designed to significantly improve precision and stability by doubling the inertia. The movement provides a power reserve of approximately 45 hours. The dial is further enhanced by pink gold applied hour-markers and Royal Oak hands, both treated with a luminescent coating for legibility.
General reviews of the 15416CE frequently praise its striking monochromatic aesthetic and the high level of hand-finishing required to polish and brush ceramic surfaces. Enthusiasts often highlight the visual depth of the skeletonized movement and the technical sophistication of the dual balance wheels. While the watch is lauded for its scratch resistance and lightweight feel, some critics note that the double balance mechanism results in a shorter power reserve compared to standard movements, and the ceramic material, while hard, can be brittle if subjected to sharp impacts.