Insten Professional Watch Repair Appraisal Magnifier Eyewear Loupe Glasses 20X with LED for Mechanical Processing, Electronic Repair, Jewelry Appraisal, Timepieces Repair and Miniature Engraving 20x magnification power. Loupe location is adjustable on the frame for your comfort. Mounted on a black eyeglass frame for hands free use. Bright LED bulb is adjustable to illuminate viewing field. Perfect for installing & repairing camera, watch, and other electronics. Battery: 2 X CR1620 batteries (Batteries NOT included).