"Ocho" is Spanish for eight, and "Negro" is Spanish for black. The Swatch x Audemars Piguet Bioceramic Royal Pop "Ocho Negro" (SSX03W101N) is one of eight pocket watches in the Royal Pop collection, each named for the word "eight" in a different language, each carrying the eight visible hexagonal screws that define the AP Royal Oak bezel.<br><br> Ocho Negro pairs a black Bioceramic case with a white octagonal bezel and crown. The white Grande Tapisserie dial carries Grade A Super-LumiNova hands and hour markers with blue light emission, protected by a scratch-resistant sapphire crystal with anti-reflective coating. Eight white hexagonal screws with a vertical satin finish complete the Royal Oak silhouette.<br><br> The movement is the first-ever hand-wound Sistem51. All previous Sistem51 movements, including MoonSwatch, were automatic. This version adds a Nivachron hairspring, 90-hour power reserve, and 15 patents in a Lépine layout with the crown at 12 o'clock. The transparent sapphire caseback showcases the movement alongside a digitally printed Pop Art design, with collaborative Swatch x AP branding on the dial, crown, and caseback.<br><br> Included: an 18cm black calfskin lanyard with white stitching, attached via a Bioceramic clip system. Retail: $400. Original Release Date: May 16, 2026.