Many manufacturers use sapphire to manufacture thousands of forms of watch glasses, and sapphire watch glasses can also be understood as sapphire case, which means case. This synthetic sapphire is made into a series of watch cases, which have distinct characteristics and many advantages. Its hardness is high, comparable to strong materials such as iron and copper, second only to diamond. It can resist the compression of external objects, prevent damage, and thus damage its internal structural components.

Secondly, it also has strong corrosion resistance and compression resistance, or in other words, it has more functions such as waterproofing, shock resistance, etc. It is precisely because sapphire products have these different characteristics that they become watch cases.

The sapphire used in the watch mirror is artificial, which is a transparent and colorless sapphire made by firing pure alumina under high temperature conditions. The high strength, high hardness, and scratch resistance of sapphire formed in this way are all improved, making it an indispensable component of the watch mirror series.