Audemars Piguet Royal Oak 26585Ce.Oo.1225Ce.01 Perpetual Calendar Open Worked 41mm Ceramic

The Audemars Piguet Royal Oak 26585CE.OO.1225CE.01 is one of those watches that doesn’t try to impress loudly. It doesn’t need to. Everything about it is precise, intentional, and quietly confident. Black ceramic, openworked dial, perpetual calendar each element is there because it belongs there.

The 41mm case is crafted entirely from black ceramic, a material that’s extremely hard, scratch-resistant, and surprisingly light on the wrist. It keeps the sharp Royal Oak geometry intact while adding a stealthy, modern edge. This isn’t polished-for-show luxury; it’s technical elegance.

Openworked Dial & Perpetual Calendar

What really pulls you in is the openworked dial. You’re not just reading the time you’re looking straight into the mechanics. The perpetual calendar layout is beautifully balanced, showing day, date, month, leap year, and moon phase without feeling crowded. Once set, it automatically adjusts for different month lengths and leap years, requiring no correction until 2100. That’s not marketing talk. That’s real watchmaking intelligence.

Inside beats the ultra-thin Caliber 5135, a self-winding movement designed specifically for this level of complexity. Despite the open architecture and complications, the watch stays slim, wearable, and surprisingly comfortable for daily use.

Ceramic Bracelet & Wearability

The integrated ceramic bracelet deserves its own moment. It’s smooth, durable, and visually seamless with the case. Ceramic doesn’t fade, doesn’t scratch easily, and keeps its deep black tone over time. On the wrist, it feels cool, balanced, and very intentional.

Watch Specifications