Huami has been sharing some late details about the upcoming Amazfit GTR 2 and Amazfit GTS 2 smartwatches. Along with a new promo image of the fashionable wearables, Huami has also revealed that the screens of the GTR 2 and GTS 2 have sapphire-level hardness thanks to a special coating.
https://www.notebookcheck.net/Huami-s-upcoming-Amazfit-GTR-2-and-Amazfit-GTS-2-smartwatches-have-diamond-like-screen-coatings-that-are-as-hard-as-sapphire.494861.0.html