Size: The glass lens can reach 10X magnification. The lens diameter 3 cm/1.2 inch the foldable size: 5.6*3.7*1.3cm/2.2*1.5*0.5inch, expandable size:5.6*3.7*5cm/2.2*1.5*2inch.Great magnifier for reading, crossword puzzle game, close observation for those items like insects, hallmarks, stamps, coins, rocks and gem collection, mechanical processing, needlework, electronic repair, jewelry appraisal, timepieces repair and miniature engraving.Up to 10x magnification to help you see the tiniest details, use this magnifier for reading maps, doing fine stitch work, or magnifying virtually any text to make it more visible and easier to read.This magnifier can be folded, compact design for carrying in pocket or purse for traveling, or tote it in your pocket for ease of reading labels at the grocery store.Huge diameter magnifying lens, magnifies texts and objects at good blend of contrast and definition. Crystal clear and sharp image, anti-reflective high quality lens provides super clear and even toned visuals with no color distortions or light leaks.