General description These 4PCS Illuminated Jewelers Loupe Magnifiers are designed for detailed observation with four different magnification options: 10X, 20X, 30X, and 40X. The 40X magnifier features both LED and UV lights, allowing you to examine the smallest details and detect fluorescent minerals. Technical specifications Magnification: 10X (21mm), 20X (21mm), 30X (21mm), 40X (25mm) Light Source: 2 LED lights and 1 UV light (only on 40X magnifier) Power: 3 LR1130 batteries Material: Optical glass lenses and stainless steel body Dimensions: Measurement allowed error is +/- 1-3cm Compatibility and accessories Includes 4 loupe magnifiers Comes with 2 boxes for easy portability Installation No installation required; ready to use out of the box Usage Ideal for examining gems, jewelry, coins, stamps, rocks, clocks, antiques, watches, electronics, and more Perfect for collectors, jewelers, and hobbyists Great gift for children to explore the miniature world Other information Note: 10X,