Extri Let you know more about Sapphire Crystal Glass.
Sapphire crystal really never be worn out ? This view is not scientific, Any substance are possible to be worn out , should be "not easy to be worn out."
Currently customized sapphire watches,the hardness is Mohs 9 degrees, only next to diamond, Mohs 10 degrees hardness. While the ordinary glass , the hardness is Mohs 5-6 degrees.
How many categories of glass ? which is more wearable? which is more indurative?Glass Material can be basically divided into plastic glass, quartz glass , sapphire glass.
The plastic glass more solid, not afraid to fall relatively , sapphire crystal is most wear-resistant.
EXTRI brand watches all are equipped with sapphire glass, only to diamond hardness. It let you enjoy the happiness, and not worry about damaging your watches.
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