Screen Protector/Film - BESSKY Tempered Glass 9H LCD Screen Protector Guard Cover for ZTE Obsidian Z820 Anti-Fingerprint, Oleophobic Coated,Explosion-proof. Ultra Slim Thickness. Bubble Free. High quality screen protector for ZTE Obsidian Z820. Improve the existing disadvantage of LCD Protection Film. Light Penetration Ratio 93.7% (Comparison: Glasses 92%, General protective film 80%). 9H Strong Hardness Anti-Scratch: The World Best! Real tempered glass protector.