Audemars Piguet Royal Oak Double Balance Wheel Openworked – Ref. 15416CD.OO.1225CD.01
The Audemars Piguet Royal Oak Double Balance Wheel Openworked, reference 15416CD.OO.1225CD.01, takes Royal Oak horology into 2025 with a bold new look and technological refinement. In a 41 mm case crafted entirely from “Bleu Nuit, Nuage 50” ceramic, this open‑worked gem reveals AP’s patented dual‑balance mechanism beneath a captivating skeletonized dial—a harmonious fusion of material innovation and haute horlogerie prowess.
Case and Bracelet – Ceramic Innovation
- Material & Finish: The full 41 mm case and integrated bracelet are cast in deep blue “Bleu Nuit, Nuage 50” ceramic—celebrated for its scratch resistance, light weight, and luminous sheen.
- Dimensions: At 9.7 mm thick, it maintains modern wearability without sacrificing presence.
- Water Resistance: Rated to 50 m, thanks to sapphire crystals front and back and a robust titanium caseback.
Skeleton Dial & Aesthetics
Underneath glare‑proofed sapphire crystal lies a skeletonized dial showcasing a rhodium-toned openworked movement. The inner bezel echoes the ceramic hue, providing visual cohesion, while pink‑gold hour markers and luminescent Royal Oak hands offer elegance and legibility against the deep blue backdrop.
Calibre 3132 – Dual Balance Performance
- Double Balance Wheel: AP’s twin‑balance mechanism, powered by two hairsprings and a differential, enhances chronometric stability and reduces positional error—a premier technical achievement in luxury watchmaking.
- Movement Specs: The automatic Calibre 3132 operates at 3 Hz (21,600 vph), with a 45‑hour power reserve, and is meticulously finished with beveling and satin brushing.
Unique Attributes
Ref. 15416CD stands apart through its pioneering use of deep blue ceramic across case, bracelet, and inner bezel—an innovation reflecting AP’s material exploration. The skeletonized dial places the patented dual‑balance mechanism center stage, while pink‑gold accents add a luxurious touch. As AP’s first Royal Oak to offer this ceramic shade, it’s firmly positioned at the intersection of design innovation and technical mastery.
Technical Summary
- Reference: 15416CD.OO.1225CD.01
- Case & Bracelet: 41 mm Bleu Nuit ceramic; 9.7 mm thick; integrated bracelet; 50 m WR
- Dial: Skeletonized rhodium-toned movement with pink-gold markers and hands
- Movement: Calibre 3132 automatic; double balance wheels; 3 Hz; ~45h power reserve
- Crystal: Sapphire front/back, both anti-reflective
Collector Appeal
This model defines modern Royal Oak innovation. With its pioneering ceramic construction, architectural skeletonized design, and patented dual-balance calibre, it appeals to collectors who prioritize material innovation and mechanical excellence. Its deep-blue ceramic presence, combined with horological sophistication, elevates it to a next-generation icon.
Conclusion 15416CD.OO.1225CD.01
The Audemars Piguet Royal Oak Double Balance Wheel Openworked Ref. 15416CD.OO.1225CD.01 is a landmark model—bold, technical, and artistically forward. A trailblazer in ceramic craftsmanship and a masterpiece of mechanical architecture, it offers unmatched style, precision, and collectibility. For aficionados of avant-garde horology, this Royal Oak sets a new standard.

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