Fancii LED Illuminated 20X Jewelers Loupe Magnifier, Triplet Glass - Premium Aluminum Magnifying Eye Loop Best for Jewelry, Diamonds, Gems, Coins, Engravings and More! ADJUSTABLE FOCUS - 20X power zoom magnifying glass loupe with adjustable lens to allow examination of objects close-up PROFESSIONAL QUALITY - Aircraft grade aluminum frame and optical glass lens suitable for jewelers, watchmakers, geologists, coin and stamp collectors, photographers, and hobbyists PORTABLE AND STYLISH - Lightweight, pocket size, and easy to carry. Comes with a black PU leather sleeve for added protection. PREMIUM HIGH CLARITY - Best for examining intricate details in jewelry, gems, diamonds, antiques, coins, stamps, currency, photography, film negatives, etc. BRILLIANT LED LIGHTS - 6 bright eco-friendly and energy-efficient lights; turn on or off with a simple switch on the side (Batteries included) 0.6&#034;(15mm) magnifying lens: 20X zoom 20X lens focal length: 0.4&#034; (10 mm) Measurement: 50 mm by 35 mm Adjustable Focal Length Illumination: 6 bright white LED lights Aluminum frame Transparent stand Requires three LR927 watch batteries (Included)