Audemars Piguet Royal Oak 26579CE, Perpetual Calendar, Black Ceramic, Grey Grande Tapisserie Dial, 41 mm

The Audemars Piguet Royal Oak Perpetual Calendar 26579CE is a striking high-complication sports watch that combines the iconic architecture of the Royal Oak with an all-black ceramic construction and a sophisticated perpetual calendar display. Measuring 41 mm, the case is crafted from black ceramic and features the collection’s signature octagonal bezel secured by eight exposed hexagonal screws, with meticulously executed brushed and polished surfaces highlighting Audemars Piguet’s ability to apply traditional haute horlogerie finishing techniques to advanced materials. The grey Grande Tapisserie dial creates a refined contrast against the black ceramic case and features applied white gold index hour markers and Royal Oak hands for excellent legibility. Four subdials organize the perpetual calendar indications across the dial, displaying the day, date, month, astronomical moon phase, and leap-year cycle, while a week indicator around the outer dial adds another useful calendar function. Engineered to account automatically for months of different lengths and leap years, the perpetual calendar requires no manual date correction until 2100, provided the watch remains running. The integrated black ceramic bracelet continues the Royal Oak’s unmistakable design from the case to the wrist, with alternating brushed and polished surfaces creating exceptional depth across the monochromatic construction. Powering the Royal Oak Perpetual Calendar 26579CE is the ultra-thin self-winding Caliber 5134, offering approximately 40 hours of power reserve and visible through the sapphire crystal caseback. With its 41 mm black ceramic case, grey Grande Tapisserie dial, integrated ceramic bracelet, comprehensive perpetual calendar, moon-phase display, and sophisticated automatic movement, the Audemars Piguet Royal Oak 26579CE is an exceptional choice for collectors seeking one of the Royal Oak collection’s most distinctive combinations of advanced materials, iconic design, and traditional high complication.