Xiaomi Mi4 Antibacterial Tempered Glass Screen Protector, icroo A-Glass(0.33mm) ANTI-BACTERIAL & ANTI-FINGERPRINT COATING : Certificated 99.99% anti-bacterial performance by global institutes as SGS, JFRL, FITI, Hohenstein and etc. It is not silver-nano type, but eco-friendly material (safe to human body). Featuring maximum protection from high impact drops, scratches, scrapes, and bumps direct to the screen for Xiaomi Mi4. 99.9% High-definition clear hydrophobic and oleo phobic screen coating protects against sweat and oil residue from fingerprints. 100% SATISFACTION GUARANTEE: At I-CROO, it's all about creating happiness and building a relationship with our customers. That's why we have a 100% SATISFACTION GUARANTEE! We stand by our products and our services so much, that if you have ANY issues with any I-CROO products, please let us know and we will make it right.