Ap The annual Audemars Piguet - Royal Oak 50th Anniversary special edition introduces a brand new dial design with a matte finish that seamlessly integrates with the case and strap.1. The case features a non-insert rubber ring, perfectly embodying the reputation of the King of Steel. The eight screws on the bezel are meticulously crafted with sharp edges.2. The glass is made of sapphire crystal with enhanced anti-reflective properties.3. The movement is powered by Citizen (zero faults).4. Both the curvature and brushed finish are impeccable.5. The clasp operates with a press-and-release mechanism, with each clasp undergoing strict quality control, ensuring smooth and reliable performance.