Official RETINAGUARD Anti-Blue Light Screen Protector for popular mobile phones and tablets by RG, INC ::Effectiviely blocks 90% of harmful blue light from LED screens. :::Excessive blue light exposure found in LED screens may lead to imbalanced melotonin levles found in sleep disorders and eye strain and fatigue. ::: RETINAGUARD uses exclusive technology and has been professionally tested by INTERTEK and SGS LABS, ensuring quality in products for over 130 years. *We understand the potential harm of excessive blue light exposure in children and adults who actively use LED devices and take great pride in achieving the necessary requirements to ensure that RETINAGUARD is the highest performing and most trusted blue light Screen Protectors on the market, the RG, INC Guarantee. Packaging includes: (1)Anti-Blue Light Screen Protective Film × 1 (2)Dust Remover × 1 (3)Micro-Fiber Cleaning Cloth × 1 ::: Color: Crystal HD Transparent ::: Application ::: 1. Clean & remove any dust or smudges on the screen with the specially designed micro fiber cleaning cloth found inside your package. 2. Peel back the label marked number(1), try to avoid touching the backing so your stays clean and fingerprint-free. 3. Align the film to the corner of your screen protector , while holding it in place, slowly apply the screen protector. 4. Peel back the label marked(2), as long as there is no dust or dirt underneath, any bubbles should disappear in 48 hours. ( White border films do not have the (2) label )