3D Hd Mobile Screen Glass Magnifier Fresnel Mirror Screen Adopts Optical Hd Zoom Technology, Which Can Enlarge Hd By 3 To 4 Times, Effectively Preventing Radiation Generated By Mobile Phone. Sliding Design: Stretch The Silicone Round Button, And Then The Screen Appears. This Sliding Screen Mode Helps To Protect The Screen And Is More Suitable For Transportation. Simple Operation: The Screen Amplifier Doubles The Screen Size, So You Can Make The Most Of Movies And Videos On Your Hd Smartphone. Add A Bluetooth Keyboard And Use It To Play Hd. High Quality Materials : Abs Plastic And Fresnel Mirror, Strong And Durable, Even Higher Definition. Raise Frame Adjustable Angle Of View. Non Slip Silicone Pad Protects And Stabilizes The Phone. Excellent Compatibility : The Projector Screen Of The Magnifying Glass Can Be Used With All Smartphone Device. 3D Visual Pleasure Can Avoid Visual Fatigue. Ame;Mobile Phone Screen Magnifier