The 3D Armour Glass protective glass is made from the highest quality quartz glass, which takes 4.5 hours to cure. The outer electrolytic coating further increases its abrasion resistance by up to 5,000 times. This advanced manufacturing process makes Crong's Armour Glass extremely durable and provides highly effective protection against scratches. The glass also has permanent bacterial protection, making using your iPhone even more enjoyable and safer. Precise installation of the glass over the entire screen surface is facilitated by a special mounting frame, which allows the glass to be adjusted and applied without specialist assistance. Unlike other glasses, the 3D Armour Glass with bacterial protection also has an adhesive over the entire surface for excellent sensitivity and touch response.A special cover at the top of the glass also reduces dirt on the phone's speaker. Product features: - Electrolytic outer coating - Extreme abrasion resistance - Permanent bacterial protection - anti-dust speaker cover - Full surface adhesive - High touch sensitivity and responsiveness - Protects the entire surface of the screen (Edge-to-Edge) - Compatible with most protective cases - Easy to install (mounting frame included)