Ideal for use in poor lighting conditions, this 10x lighted loupe features a 21mm lens and contains six bright white LED lights to illuminate the field of view & stones. It has a triplet lens which makes it achromatically and aplanatically corrected. Uses an optical glass magnifier for better viewing result. Applications & Usage:Great for jewelers, mechanics, machinists, stamp & coin collectors, arts & crafts, photographers, hobbyists, watchmakers and other fields that require a micro view of the target object. Use it to examine jewelry or gems, look inside the movement of a watch, inspect and catalog 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. Features: A chromatically and aplanatically corrected lens Bright image and good visibility Updated with attached super-bright LED light Made with the finest quality optics and with top quality metal cases Foldaway Specifications: Loupe Power: 10x Diameter of lens: 21mm, optic glass 6 x LED Ultra Bright Powered by 3 x LR927 cell batteries Set includes: 1 x 10x Magnification Loupe 3 x LR927 cell batteries 1 x Synthetic Leather Carrying Case 1 x Lock Key