Sapphire Glass Windows for Phone LED Watch

Sapphire Glass Windows for Phone LED Watch. Extreme Surface Hardness: Second hardest crystal next to diamonds with Knoop hardness of 2200 kg/mm2. High Transmittance: Transmits wavelengths from UV to Mid-Infrared with transmittance over 95%. Customizable Dimensions: Size ranges from 0.2-300mm with customizable thickness and shape. Chemical Resistance: Resistant to common chemical acids and alkalis due to single crystal Al2O3 composition. Thermal Conductivity: Features high thermal conductivity with a soften temperature of 2000 K. Customizable Coating: AR, BBAR, UV, VIS, or IR coatings available upon customer request. Wide Application Range: Ideal for watch, mobile phone, beauty equipment, lasers, and LED systems.