LEIGAO You can get an extremely close view of the tiniest detailsGreat for jewelers diamond inspection, yard sale or swap meet buyers, stamp, coin, gems. Also used in science labs for mineral, plant, insect inspection and identification.It is a very useful gadget to carry along whether you use it to examine jewelry or gems, look inside the movement of a watch, inspect and catalogue coins and stamps, inspect or view photographs, printing, miniature art, mold making or just for reading the ""fine print"" of a document. Its incredibly useful as well to use for electronics repair, soldering micro-parts precision machining.Specification:Material: Metal frameABS magnifier casingColor: blackLens magnifications: 20XLED Light diameter: 5mmColour: BlackSize: 155*50*50mmPackage included:1 x 20X Glasses Type Magnifier(CR1620 battery)