Round AR Coating Sapphire Crystal Watch Case with date window

Why Choose sapphire crystal?

Chemically, sapphire is single crystal aluminum oxide (Al2O3), and is useful in a transmission range from 0.2 - 5.5µm

Sapphire crystal is extremely hard and scratch resistant. 

Sapphire Crystal Feature:

SAPPHIRE CRYSTAL (sapphire glass) generally refers to synthetic sapphire, generally used in the manufacture of the watch glass.
It is resistant to wear with tungsten titanium alloys and high-tech ceramics. but sapphire materials can wear resistance and
withstand the strong impact, and some of the same or higher hardness of the material (e.g., millstone, sandpaper, nail, granite,
concrete wall, and floor, etc.) so sapphire glass are not likely to scratch the surface of these materials.

Sapphire crystal description:

Sapphire Crystal Application:

1. for high-class watches

2. for Led

3. for manufacturing equipment of semiconductors

4. for medical equipment

5. for beauty equipment

6. for jewelry pendant

7. other unique products

Sapphire watch crystal FAQ: