<p class="font_8">**Audemars Piguet Royal Oak Selfwinding Model 15400ST.OO.1220ST.02 Review by A.I. WatchMetrics**

### Watch Summary:
The Audemars Piguet Royal Oak Selfwinding Model 15400ST.OO.1220ST.02 is a quintessential example of luxury sports watches, known for its iconic design and high-quality craftsmanship. This model is classified under the Sport/Active style category, characterized by its robust build and elegant design, making it suitable for both formal and casual settings. The watch features an automatic movement with a power reserve of approximately 60 hours, ensuring reliable performance for daily wear. Its distinctive octagonal bezel and "Tapisserie" patterned dial are standout features that appeal to collectors and enthusiasts who appreciate timeless design and precision engineering.

### Overall Watch Rating: 8.7/10.0

- **Dials &amp; Design Metric (9.5/10.0)**
- The Royal Oak's design is iconic, featuring a "Tapisserie" dial and a unique octagonal bezel, which are both meticulously crafted and instantly recognizable.

- **Material Metric (9.2/10.0)**
- Constructed with high-grade stainless steel and featuring a sapphire crystal, the watch exemplifies durability and luxury, with exceptional finishing that enhances its aesthetic appeal.

- **Movement Metric (9.0/10.0)**
- Powered by the in-house Caliber 3120, the movement offers a 60-hour power reserve and is known for its precision and reliability, showcasing Audemars Piguet's expertise in watchmaking.

- **Brand Metric (9.0/10.0)**
- Audemars Piguet is a prestigious brand within the haute horology tier, renowned for its innovation and craftsmanship, particularly with the Royal Oak line.

- **Functions Metric (8.8/10.0)**
- The watch includes practical features such as water resistance up to 50 meters and a date function, making it versatile for everyday use.

- **History &amp; Innovation Metric (8.7/10.0)**
- The Royal Oak is historically significant, having revolutionized the luxury sports watch market in the 1970s with its bold design and technical innovation.

- **Versatility Metric (8.5/10.0)**
- Its design allows it to transition seamlessly between formal and casual settings, offering versatility in various social contexts.

- **Rarity Metric (8.0/10.0)**
- While not a limited edition, the Royal Oak's desirability and the brand's controlled production ensure a degree of exclusivity.

- **Complications Metric (7.5/10.0)**
- The watch features a date complication, which, while basic, is well-integrated into the overall design.

### Celebrity and Historical Figures:
The Audemars Piguet Royal Oak is favored by numerous celebrities and public figures. Notably, actor Tom Cruise and musician Jay-Z have been seen wearing the Royal Oak, highlighting its status as a symbol of luxury and style. The watch's association with such high-profile individuals underscores its appeal and prestige in the world of luxury timepieces.</p>