High Definition Picture; Eye protection against blue, no power needed. It is able to relieve the discomfort and visual fatigue. [Advantages ]: Pullable Design for easy-carry. Clearer picture & larger viewing angle. Enlarge the screen 3-4 times and no slipping; More helpful to protect eyes. [Comfortable Viewing Experience]: 16inches screen magnification 3-4 times, wonderful visual enjoyment, more relaxed to watch movies, videos on your phone. [Design for Feeling]: The pulling-out design can resist the finger print, dust and so on. And the rotating design can fix the lens. If the height is not enough, you also can increase the height with the gave ring. It is super slim when it is folded, so it also can be carried around. Suitable for indoor, camping, journey, leisure, anywhere and etc. [Best Choice of Holiday Gifts]: This screen magnifiers are perfect gifts for old people, children, movie lover. Children can use it watch cartoon to protect their eye sight; Old people can use it to zoom in the screen and can watch it clearly, and it also can prevent the fatigue; Movie lover can use it every where and any time.