Foldable Design: Foldable and tiny design make it very portable,just pull out the jewelry magnifier to use,and put it back after using it, can protect the lens from dust and damage. Portable Design: With a small loop on the top to attach to a neck chain or key chain and easy to carry. Suitable for older people, students, professionals, people with poor vision and macular degeneration. High Quality: Made of metal frame, compact and light, foldable, portable. Transparent 30X optical glass lens offers a high-resolution view, a scratch-resistant, shatterproof. Widely Use: Perfect for identifying hallmarks and minute details on the interior of rings, and the study of geology, stamps, miniature paintings and antiques etc. Easy to Use: perfect for Industrial Purpose, Circuit Board and Printing Industry, Medicine, Gardening, Coin, Stamp, Jewelry, Appraisal, Education, Geography etc.