Magnifying Power - 20X Optical grade lens - optical lens,High precision structure,Clear distortion-free magnifying lens Portable light weight - It's safe non-toxic,so that easy to carry,suitable for a long reading time without fatique feel Wear-resistant does not fade - Aluminum alloy material, Fit hand,Ergonomic design,hard and tough, wear and impact resistant Application - Ideal magnifier for viewing fine details in books, newspapers,magazines, maps, electronics, miniatures, jewelry, pill bottles, hobbies and crafts.