Audemars Piguet Royal Oak 26579CS, Perpetual Calendar, Blue Ceramic, Blue Grande Tapisserie Dial, 41 mm

The Audemars Piguet Royal Oak Perpetual Calendar 26579CS is a remarkable achievement in contemporary haute horlogerie, combining one of the brand's most celebrated complications with the innovative use of advanced ceramic materials. Crafted entirely from blue ceramic and measuring 41 mm, this exceptional timepiece showcases the iconic Royal Oak design with its signature octagonal bezel, integrated bracelet, and beautifully hand-finished surfaces that demonstrate Audemars Piguet's mastery of working with one of the industry's most challenging materials. The striking blue "Grande Tapisserie" dial is complemented by contrasting white gold applied hour markers and luminous hands, while four perfectly balanced subdials display the perpetual calendar indications, including the day, date, month, leap year, and moon phase. Every detail reflects the Maison's dedication to precision, elegance, and uncompromising craftsmanship. Powering the watch is the ultra-thin in-house automatic Caliber 5134, a highly refined perpetual calendar movement offering approximately 40 hours of power reserve. Engineered to automatically account for varying month lengths and leap years until the year 2100, the movement showcases exceptional technical sophistication while maintaining the slim profile that has become synonymous with Audemars Piguet's perpetual calendar models. Visible through the sapphire crystal caseback, the beautifully decorated movement features traditional haute horlogerie finishing, including polished bevels, Geneva stripes, and a 22K gold oscillating weight. The harmonious combination of the blue ceramic case and bracelet, the elegant Grande Tapisserie dial, and one of watchmaking's most prestigious complications makes the Royal Oak Perpetual Calendar 26579CS one of the most desirable modern Royal Oak references ever produced. With its groundbreaking materials, exceptional mechanical artistry, and outstanding collector appeal, this extraordinary timepiece stands among the finest creations in Audemars Piguet's legendary history.