It can bring you high-definition vision, prevent blue radiation, and no power supply. Enlarge your screen to relieve the discomfort and visual fatigue caused by staring at a small screen for long periods of time. This screen effectively doubles the size of the screen. Enjoy high-definition movies and videos on your smartphone. It adopts a storage-type rotating and folding design. Height can be adjusted by ring stand. Suitable for indoor, camping, travel, leisure, anywhere, etc. Screen magnifiers are designed for most smartphones. Easy to carry.