1. Powerful 40x magnification: The LED and UV jeweler's loupe provides strong magnification for examining fine details. The magnifying glass delivers distortion-free viewing and is ideal for use in the watchmaking industry, inspecting small objects, reading fine print, or evaluating precious stones and diamonds. 2. High-quality lighting: The jewelry magnifier features LED and UV lights that provide a clear, sharp image even in low-light conditions. The UV light helps in currency verification and jewelry inspection. Requires 3 LR927 batteries (included). 3. Portable design: Simply slide the magnifier out to use and retract it back into the case when not in use. The compact case allows for easy storage in pockets or bags, saving space. 4. Versatile use: This eye magnifier is suitable for gemstone and coin collectors, jewelers, hobbyists, and industrial applications. It also makes a great gift for children interested in exploring small objects. Constructed with an optical glass lens and a full metal case, it is lightweight, durable, compact, and practical.