[3D HD SCREEN AMPLIFIER]：Adopt high-definition zoom optical technology,increase the screen size by 2-4 times and no slipping, makes the picture more clear,less cause eye damage from radiation, please use in low light environment,this will give you a much better viewing experience. [PULL-OUT DESIGN]:HD Foldable 3D Blu-ray easy to carry, HD screen magnifier Storage type rotating folding design. Super slim when folded and also can be carried around in your bag. Suitable for indoor, camping, journey, leisure, anywhere. [EYE PROTECTION]: Magnifier can prevent visual fatigue caused by reading novels and watching movies and videos for a long time, and the light shielding plate can prevent reflection and effectively protect eyesight. [COMPATIBILITY]：This Phone Screen Amplifier works with all makes and models of smartphones (iphone, Samsung, Google, Huawei, etc.).Just put the phone into the screen amplifier, you can easily enjoy the home theater-like effect. [BEST PRESENT]: Do not need battery, this screen magnifier is convenient to use. The phone enlarger is a wonderful gift for your family, friends, movie lover,parent, children, use all the time, everywhere, larger viewing angle,watch clearly, protect the eyes.