Calibre 2236 Is equipped that has a Syloxi hairspring that is made by Rolex and patented. This silicon hairspring incorporates a patented geometry that guarantees the calibre’s regularity in any position. British look at corporations of time were being sluggish to depart guiding the their hand-crafting customs for mass production. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/