Calibre 2236 Is equipped with a Syloxi hairspring that is produced by Rolex and patented. This silicon hairspring incorporates a patented geometry that makes sure the calibre’s regularity in any posture. Coupled with his colleague Thomas Earnshaw, the pair would build simplified and simple maritime chronometers. The model’s founding inspiration https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/