Portable, compact and lightweight, humanized design comes with a mini keychain for attachment. Slip out pocket magnifier with a built-in folding case that protects the lens from dust and damage Magnifier specifications: 3.5inch Lenth,1.5inch Width and 0.8inch High;30X Main and 60X + 90X Auxiliary Lens Bright LED light of the Magnifying Glass provides enough light at any dim conditions. Magnifier is best for reading, jewelry appraisal, electronics, stamps, crafts, coins, mechanical processing, etc.