1. Powerful 40x magnification: The LED and UV jeweler's loupe provides strong magnification, allowing you to examine fine details with clarity. The magnifying glass delivers distortion-free viewing, making it ideal for use in the watch industry, inspecting small objects, reading tiny text, or 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 certain jewelry characteristics. 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 and protecting the device.4. Versatile use: This eye magnifier is suitable for gemstone and coin collectors, jewelers, hobbyists, industrial applications, and as an educational gift for children interested in exploring small-scale details. Constructed with an optical glass lens and a full metal case, it is lightweight, durable, compact, and practical.