Eye fatigue

3D screen magnifier makes you feel like watching a movie at theater.It is very funny and cool to enlarge smartphone screen bigger. No Power-Driven, Energy Saving, Environmental Protection. Totally enclosed design, all-round lock source to improve screen brightness, effectively prevent the reflective image 3D visual enjoyment,prevent visual fatigue Easy to use, folding design, lightweight and easy to carry.With This Product, You Will Greatly Enjoy The Movies And Videos. Folding Design, Small Volume Results In Convenient Carrying On Business Travel.F2 3D Screen Magnifier, Enjoy Real 3D Visual, Reduce Eye Fatigue After Longtime Watching On Your Mobile.