Audemars Piguet Royal Oak Concept Watch 42mm Titanium Skeleton Rubber 26631IO. The Audemars Piguet Royal Oak Concept 26631IO, Tourbillon “Spider-Man” timepiece showcases an impressive feat of skeletonization. In collaboration with Marvel, this watch pays homage to Spider-Man, who seems suspended from the dial as he traverses through the tourbillon mechanism. Crafted from titanium, the watch features a skeleton dial that reveals intricate details of its inner workings. The openworked dial prominently displays the “Spider-Man” figure, accompanied by white gold hour-markers and hands coated with luminescent material for enhanced visibility. With a case diameter of 42mm, this timepiece has 50m water resistance and commands attention on the wrist.