Insten Illuminated Magnifier Jewel/Loupe with 40X Magnification + Slide Out Pocket 30X Magnification for Senior Reading Map, Newspaper, Magazine, Novel, Photos, Crafting, Repairing, Crossword Puzzle This Magnifying Glass is the ideal tool for jeweler, watchmaker, coin and stamp connoisseur. Adjustable LED Light for better illumination. Wide view, great for watch repairing and inspecting jewelries, stamps, coins, notes, etc. 30X Magnifying Glass: Loupe can be adjusted on the eye glass frame. Magnification: 30 X. Lens Diameter: 0.83 inch/ 21mm. Uses: 3 x LR1130 batteries ( included ). Folded size: 2.09 x 1.38 x 0.83 inch/ 5.3 x 3.5 x 2.1cm. Unfolded size: 3.19 x 1.38 x 0.83 inch/ 8.1 x 3.5 x 2.1cm. Includes: Jeweler loupe x 1. LR1130 batteries x 3. 40X Magnifying Glass: Magnification: 40 X. Lens Diameter: 25mm. Uses: 3 x LR927 batteries(included). Size: 55x 33 x 25 mm approx. Includes: Jeweler loupe x 1. plastic box x 1. LR927 batteries x 3. Illumination: LED light. Color : Black. User manuals are included.