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, making it ideal for use in the watch industry, inspecting small objects, reading fine print, and evaluating gemstones 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 verifying currency and identifying jewelry characteristics. 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, ensuring convenience and space-saving portability. 4. Versatile use: This eye magnifier is suitable for gem and coin collectors, jewelers, hobbyists, and industrial applications. It also serves as an excellent tool for children to explore small-scale details. Constructed with an optical glass lens and a full metal casing, it offers durability, stability, and a compact form for practical use.