Calibre 2236 Is fitted using a Syloxi hairspring that is produced by Rolex and patented. This silicon hairspring features a patented geometry that makes certain the calibre’s regularity in any place. six miles, or fifty five.7 km) at the conclusion of a 6 weeks’ voyage. (The geographical mile is outlined https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/