Material:zinc alloy (baking paint), double layer optical glass lenses. Three-folding and free standing design, light weight, durable enough for your daily using. Lens Magnification:15X; Lens Diameter:30mm/1.18 inch; provide you more clear and close view for tiny objects, convenient for people with low vision or for close observation. The foldable magnifier with fixed scales and measurement in inch and mm units, more practical for users. Size:68x50x23mm/2.68x1.97x0.9 inches when folded, 70x50x55mm/2.75x1.97x2.16 inches when unfolded. Pocket size convenient to carry, compact and easy to use. Suitable for textiles class, counting threads, stitches, reading, inspection, inspecting coins, stamps, maps, currency, crafts, jewelry identification, antiques, hobbies, electricians, watch repair, fine print, model building, ect. Specification: Material:zinc alloy (baking paint), optical glass lenses Lens Magnification:15X Lens Diameter:30mm/1.18 inch Folded Size:68x50x23mm/2.68x1.97x0.9 inches Unfolded Size:70x50x55mm/2.75x1.97x2.16 inches Weight:133g Color: blackProducts from KJ's store