Calibre 2236 Is fitted which has a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring contains a patented geometry that guarantees the calibre’s regularity in any situation. Lange & Söhne. I’ll clarify why: the German manufacturer stepped on to the chronograph stage with their A lot-praised https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/