What You Get: ZenHoo Screen Protector PET film, Alcohol Wipe, Dust Removal Sticker, Bubble Removal Card, and Installation Guide. Precise Fit: Precise Laser Cutting Provides Maximum Screen Protection. Easy Installation: Japanese High-Quality Anti-Bubble Adhesive Makes Installation Process very straightforward. Block Harmful Blue Light & Protect Eyes: Have you experienced eye-fatigue, eye-strain, loss of vision, sleeplessness after using your phone/tablet? It’s because of blue light from screen. This glass blocks harmful blue light and ultraviolet rays of your device's screen. Anti Blue Light Screen Protector PET film: Offer Strong Screen Protection.