Calibre 2236 Is equipped having a Syloxi hairspring that is produced by Rolex and patented. This silicon hairspring has a patented geometry that guarantees the calibre’s regularity in any situation. British watch businesses of the time ended up sluggish to go away powering the their hand-crafting customs for mass creation. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/