Cyxus [Blue Light Filter] PET PUV Block Guard Film Retina Display Prevent Myopia Shield High Defintion (HD) Clear Guard Screen Protector for Samsung Note 4 (Note4 Front Only) Protect Your Screen from Scratches and Drops (Blue Light Filter PET) Screen protector for Samsung Galaxy Note 4, specially designed for kids and adults, who often feel eye strain and fatigue Filter harmful blue light and UV rays from your device, which can lead to eye-strain and eye-fatigue. Promote healthy melation levels for better sleep. Protect your eyes and your sleep schedule Use of PET materials, 4H hardness, anti-scratch, water-proof, oil-proof High Definition Transparency Film that ensures maximum resolution for Display. TruTouch Sensitivity for a natural feel that provides flawless touch screen accuracy Easy to Install with self-adhesive silicone and bubbles-free/no Residue