Calibre 2236 Is fitted by using a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring features a patented geometry that guarantees the calibre’s regularity in any position. To market the art of watchmaking to as Lots of people as is possible, ZENITH gets to be the https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/