TiC Is actually a kind of exceptionally difficult ceramic, and it may even be additional scratch-resistant than sapphire using a Mohs hardness rating as many as 9.5. The bezel is additionally topped with sapphire, offering just as much security as feasible to the micro gasoline tubes that form the markers. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/
Everything About Understanding the complex world of chronometers
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