Product Package content: 1 magnifying glass, 3 batteries 1. Powerful 40x magnification: The LED and UV jeweler's loupe provides strong magnification for examining fine details. The magnifying glass delivers distortion-free clarity, 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 identifying currency features and verifying jewelry authenticity. 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, offering convenience and space-saving portability. 4. Versatile use: This eye magnifier is suitable for gemstone and coin collectors, jewelers, hobbyists, industrial applications, and as an educational tool for children to explore small-scale details. Constructed with an optical glass lens and a full metal case, it is durable, lightweight, compact, and practical.