Cartier have crafted their newest timepiece, called the Rotonde De Cartier Mysterious Hours Watch. To create such a technologically complex watch, Cartier used DRIE technology, which stands for Deep Reactive Ion Etching, enabling a very precise gear wheel. The design of the caliber 9981 MC movement creates a gear wheel with high concentric precision, and the watch hands are designed to offer the illusion that they are floating on the watch face.