The sapphire watch glass comes in a polygon shape  with a very wide optical transmission band. It is made of sapphire crystal and is available with any coating and metallization. This watch glass can be customized made. With a high electrical resistance along with anti-impact and anti-scratch properties, this durable and sturdy watch glass promises to withstand everyday wear and tear.

• Polygon
• High-quality sapphire crystal glass
• It is sturdily constructed for enhanced durability
• Feature: Maximum luster and excellent hardness
• With anti-impact and anti-scratch features.
• With high electrical and corrosion resistance.
• Features great thermal stability.
• With high optical production rate.
• Features a high melting temperature of 2030 °C.
• With a high hardness of 9 Mohs, which is second to diamond.
• Purity: 99.99%.
• Density: 3.98-4.1g/cm2.
• Compressive strength: 21000kg/cm2.
• Flexural strength: 4000kg/cm2.
• Infrared transmittance: 85%.
• Dielectric constant: 7.5 - 10.5.
• Available in customized designs
• Place of origin: China.