Calibre 2236 Is equipped that has a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring incorporates a patented geometry that ensures the calibre’s regularity in almost any position. Many of their models are provided in both quartz and computerized versions, Normally at diverse cost details. A https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/