30X Zoom LED Mobile Phone External Microscope Magnifier Head HD Fisheye Glass Jewelry Clip-On Universal Cell Lens Camera MagnifierNo battery, power cord, or USB cable required, you can turn your mobile phone into a portable microscope in seconds. You can use it everywhere! Use it for lab work, STEM applications, jewelry appraisal, health diagnosis, art investigation, outdoor exploration, etc. Main Features A portable microscope works for iPhone iPad Samsung mobile and tablet. You can take the photo and save it on your phone. It fits for all smartphone or tablet thickness between