Audemars Piguet Royal Oak Perpetual Calendar 25820SP.O.0944SP.01 Stainless Steel Platinum Black Dial

The Audemars Piguet 25820SP marries sporty elegance with horological sophistication. Its 39 mm stainless steel case is elevated by a polished platinum bezel and platinum links, offering a striking two-metal contrast. The black “Grande Tapisserie” dial hosts a full perpetual calendar: day, date, month, moonphase, and leap year indicators—all arranged cleanly within four subdials for instantaneous legibility. AP’s classic white-gold hands and indices complete the refined aesthetic.

The 25820SP is a milestone in Royal Oak history—it was among the first to integrate a leap-year display, a rarity at the time. Produced over a limited period, its balanced size, precious-metal accents, and full calendar functionality make it highly sought after by connoisseurs. The reference upholds Royal Oak DNA while serving as a rare crossover between high complication and sport-luxury wrist presence.