AP Royal Oak 26574ST Series Men's Watch: An Experience of Perfection and Individuality.1. Diameter: 41MM .2. Equipped with a custom Cal. 5134 movement that perfectly replicates functionality.3. All features, including date, day, month, and moon phase, are genuine and fully operational. Available with a leather strap option.4. The case is made from 316L stainless steel, with the entire shell processed with CNC precision, matching the density of the original.5. The dial presents the original color perfectly.6. The case consists of a three-piece set: bezel, case, and back cover, with impeccable angles that showcase the brushed finish, merging quality with beauty.