AP Royal Oak 26574ST Series Men's Watch! A perfect experience of elegance and individuality! .1. Diameter: 41MM! .2. Equipped with a custom Cal. 5134 movement, perfectly replicating its functions! .3. Calendar, day, month, moon phase, and all other features are fully functional and operational. Available in both steel and rubber strap options. The case is made of 316L stainless steel, with the entire case processed with high precision CNC technology, matching the density of the original! .4. The dial is perfectly presented in the original color! .5. The case is composed of three parts: bezel, case, and back cover, showcasing a perfect brushed finish that blends quality and aesthetics!