Calibre 2236 Is equipped that has a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring incorporates a patented geometry that makes certain the calibre’s regularity in any position. In 2022, ZENITH released the DEFY Skyline, with its star-studded dial and sleek and evocative design and style. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/