Calibre 2236 Is equipped which has a Syloxi hairspring that is produced by Rolex and patented. This silicon hairspring features a patented geometry that makes certain the calibre’s regularity in any place. Meanwhile, Graham has also ventured beyond their comfort zone with some higher echelon pieces. Their Orrery Tourbillon, a https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/