HD vision, eye protection against blue radiation, no power. It will relieve the discomfort and visual fatigue causing by long time focusing on small screen.The screen magnifier works just like a phone projector screen, effectively doubling the size of your screen so you can enjoy movies and videos on your smartphone to the fullest in HD.HD screen magnifier Storage type rotating folding design. If the height is not enough, height can be adjusted with the ring stand. Super slim when folded and also can be carried around in your bag. Suitable for indoor, camping, journey, leisure, anywhere and etc.The screen magnifier is specifically designed to fit most smartphones.We also have other size,please eamil us to order.