Calibre 2236 Is equipped with a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring includes a patented geometry that makes sure the calibre’s regularity in any placement. Ming did not just slap the motion in the case and contact it every day. The actions were overhauled, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/