Insten Pocket Size Illuminated Magnifier Jewel Loupe with 40X Magnification Dual LED Light for Fine Art Inspection, Sapphire, Stone, Diamond, Gems, Ruby, Emerald, Pearl, Jade, Crystal, China This Magnifying Glass is the ideal tool for jeweler, watchmaker, coin and stamp connoisseur Adjustable LED Light for better illumination Magnification: 40 X Lens Diameter: 25mm Illumination: LED light Color : Black Size: 55x 33 x 25 mm approx Uses: 3 x LR927 batteries(included) Includes: Jeweler loupe x 1, plastic box x 1. All rights reserved. All trade names are registered trademarks of respective manufacturers listed.