AP Audemars Piguet CODE 11.59 Series 26394 Men s Watch: A Perfect Experience of Individuality .1. Case diameter: 41MM; the surface glass is made of sapphire crystal.2. Equipped with a custom Caliber 5134 movement.3. All functions such as date, day, month, and moon phase are fully operational; the strap is available in imported Italian calfskin or canvas leather options.4. The case is made of 316L stainless steel, with the entire shell processed with high precision CNC technology, matching the density of the original.5. The dial perfectly presents the original color.6. The case is composed of three parts: bezel, case, and case back, showcasing a perfect brushed finish that blends quality and beauty.