Calibre 2236 Is equipped with a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring provides a patented geometry that makes certain the calibre’s regularity in almost any position. Pierre Jaquet-Droz (1721-1790), founding father of the trendy watchmaking residence that bears his name, was don't just one https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/