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 small text, and evaluating precious stones and diamonds. 2. High-quality lighting: The jewelry magnifier features LED and UV lights to 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 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 stone and coin collectors, jewelers, hobbyists, industrial applications, and as an eonal tool for children to explore small-scale details. Constructed with an optical glass lens and a full metal casing, it is durable, lightweight, compact, and practical.