AP Royal Oak 26574ST Series Men's Watch: A Perfect Experience of Elegance and Individuality .1. Diameter: 41MM .2. Equipped with a customized Cal. 5134 movement, perfectly restoring all functions.3. All features, including date, day, month, and moon phase, are fully functional and can be used as intended. Available with a leather strap option.4. The case is made of 316L stainless steel, with the entire case processed with high precision CNC, ensuring density matches the original.5. The dial presents the original color perfectly.6. The case consists of three components: bezel, case, and case back, with an overall angle that beautifully showcases the brushed finish, merging quality with aesthetics.