TiC Is usually a form of exceptionally hard ceramic, and it may even be more scratch-resistant than sapphire which has a Mohs hardness rating as many as 9.5. The bezel can be topped with sapphire, providing as much safety as possible to the micro fuel tubes that type the markers. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
The Greatest Guide To Chronometer watches
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