Ap The annual Audemars Piguet - Royal Oak 50th Anniversary special edition features a brand new dial design with a satin finish that seamlessly integrates with the case and bracelet.1. The case set without a rubber ring perfectly embodies the reputation of the King of Steel. The eight screws on the bezel are also finely processed, with sharp angles.2. The glass is made of sapphire crystal with enhanced anti-reflective treatment.3. The movement is provided by Citizen (zero malfunction).4. Both the curvature and satin finish are impeccable.5. The clasp operates with a simple press and release, with each buckle undergoing strict quality control for smooth operation without any lag.