This is a 20x lighted loupe with 21mm Triplet Optical Glass Lens have six bright white LED lights around the lens to illuminate the field of view & the stone being viewed and a slide switch to turn lights on and off. Applications: Also great for watchmakers, mechanics, stamp & coin collectors, arts & crafts, photographers, hobbyists and other fields that require a micro view of the target object. Incredibly useful as well for electronics repair, soldering micro-parts & precision machining. Features: Top quality 20x Triplet with 21mm optic lens Loupe with 6 cool bright LED lights Produces bright image and good visibility Direct illumination eliminates shadows Achromatic - Corrected for color distortions, for true color viewing Precision optical glass lens brings fine micro-detail into view Triplet Lens - Three separate lenses bonded together Black frame, designed not to reflect light onto the object being viewed Made with the finest quality optics and with top quality metal cases Swing away cover function as handle & dust protector Specifications: Loupe Power: 20x Diameter of lens: 21mm, optic glass 6 x LED Ultra Bright Foldaway Powered by 3 x button batteries Set Includes: 1 x 20x Magnification Triplet Loupe 1 x Lock Key for screw latch 3 x button batteries 1 x Synthetic Leather Carrying Case