Calibre 2236 Is fitted with a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring includes a patented geometry that assures the calibre’s regularity in any posture. Numerous in their versions are offered in both equally quartz and computerized versions, Obviously at different selling price details. A https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/