Fancii LED Illuminated Professional 30X Triplet Jewelers Loupe Magnifier with Lighted Stand and UV Black Light ADJUSTABLE FOCUS: 30X power zoom magnifying loupe with adjustable triplet lens to allow examination of objects close-up. PROFESSIONAL QUALITY: Clear achromatic glass lens suitable for jewelers, watchmakers, geologists, coin and stamp collectors, photographers, and hobbyists. COMPACT AND PORTABLE: Lightweight, pocket sized, and easy to carry. Comes with a black PU leather sleeve for added protection. HIGH CLARITY: 21mm lens diameter; perfect for examining intricate details in jewelry, gems, diamonds, rocks, minerals, antique markings, coins, stamps, currency, photos, etc. SUPER BRIGHT LIGHTS: Two powerful, energy-efficient LED lights brighten the viewing field under any lighting conditions. A bonus UV blacklight aids in counterfeit currency detection.