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 watchmaking 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 and verifying jewelry authenticity. Requires 3 LR927 batteries (included). 3. Portable design: Simply slide the magnifier out to use and slide it back into the case when not in use. The compact storage case allows for easy carrying in a pocket or bag, saving space. 4. Versatile use: This eye magnifier is suitable for gemstone and coin collectors, jewelers, hobbyists, industrial applications, and as an educational tool for children exploring small objects. Constructed with an optical glass lens and full metal casing, it is lightweight, durable, compact, and practical.