main Features1. Premium Tempered Glass Film Is Made Of Specially Processed Glass Which Is Very Effective For Protecting The Screen From Damage2. Oleo-phobic Coating- The Oleo-phobic Coating Can Prevent Fingerprints Or Other Stains, And Make The Film Easy To Clean3. Sensitive Operation, Delicate Touch- The Self-adhesive Silicone Can Touch On The Screen Smoothly. It Makes The Installation Easy And Is More Sensitive For Operation4. Whole Transparency5. 9h+ Surface Hardness- The 9h+ Hardness Can Effectively Protect The Screen From Scratches And External Shocks6. Anti-shatter Film- If Broken, The Tempered Glass Breaks Into Small Pieces That Are Not Sharp, Marking It More Safer For Users7. Exquisite Workmanship, Ultra Thin8. Perfect Adhesion9. The Product Is Environmental Friendlyinstallation Instructions1. Please Use The Alcohol Swab And The Microfiber Fabric To Clean The Lcd Screen Before Installation2. Peel The Protective Layer Off The Adhesive Side3. Carefully Align The Glass To The Screen 4. Press The Center Of The Glass Then Adhesive Part Will Spread Over All Parts SmoothlyModel: about 0.26 mmSingle or Double: External Battery