The watch glass with date window is made of sapphire crystal and has high luster and excellent hardness. This transparent sapphire glass has a hardness that ranks nine out of ten in the Mohs scale, making it the hardest material second to diamond. It is also designed to be anti-impact, anti-scratch. The sapphire crystal watch glass is skillfully crafted to ensure high quality and is great for luxury watch.

• Sapphire crystal glass
• Date window
• High quality & craftsmanship
• Available custom design & drawing
• Available any coating & metallization
• Anti-scratch, anti-corrosion, anti-impact
• High melting temperature 2030 °C 
• 9 Mohs hardness (second to diamond)
• Vicker hardness: 2000 - 2500 daN/mm2
• Tensile strength: 26 daN/mm
• 2 Flexural strength: 35 - 39 daN/mm2
• Welcome inquiry for any drawing & details.