Zenith ACADEMY Premium Series, Spherical Tourbillon, model: 18.2211.8804, 45MM in diameter, with an 18K rose gold case and clasp, featuring a miniature world map and a zero-gravity tourbillon, also known as the Columbus manual tourbillon. Through a dual-axis gyroscope frame, the escapement and regulating mechanism remain in a horizontal state at all times. No matter how the wrist rotates, it can counteract the influence of gravity on the movement's timekeeping. The natural gemstone micro-setting splicing technique (gemstone Mosaic dial) features a deep ocean blue area cut and polished with natural lapis lazuli, while the mainland green area uses a variety of colored natural minerals such as turquoise, jasper, sand and gravel, and limonite. Power reserve display function. Limited to 1 unique item worldwide. All accessories of the stock item are complete (warranty card blank).