Portable 30X Jewelers Loupe Magnifier - Double Deck Glass Magnifying Eye Loop Stand - Best for Jewelry Identifying Type, Diamonds, Coins, Miniatures, Engravings, Markings, Textile Fabric 30X power zoom magnifying glass loupe lens,allow examination of objects close-up. Potable and lightweight, pocket size, and easy to carry.Carry in pocket or purse. Aluminum frame and optical glass lens suitable for jewelers, watchmakers, geologists, coin and stamp collectors, photographers, and hobbyists. The clear shell casing that comes already is shockproof and waterproof. EASY TO USE & FOLDABLE DESIGN. Just pull out the magnifier to use, and put it back when not in use.