TiC Is usually a sort of very tough ceramic, and it can even be much more scratch-resistant than sapphire by using a Mohs hardness rating nearly 9.5. The bezel is likewise topped with sapphire, offering just as much safety as possible to your micro gasoline tubes that sort the markers. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
Brands That manufacture chronometer watches Fundamentals Explained
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