Jewelry Loupe Set: These handheld jewelers magnifiers come with 4 different magnification lenses: 10X-21mm, 20X-21mm, 30X-21mm, and 40X-25mm. So you can observe the tiniest details very closely.UV Light & LED Light: The 40X jewelry magnifier has 2 LED lights and 1 UV light, powered by 3 LR1130 batteries. UV light detects fluorescent minerals and markers. LED light provides good illumination for clarity. You can control both lights with the on/off switch. (Note: 10X/20X/30X magnifier does not come with light.)All Metal Structure: The foldable jewelers loop magnifier is made of optical glass lenses and stainless steel body, which is not easy to break or deform, rust-proof, corrosion-resistant, wear-resistant, drop-resistant, and impact-resistant.Foldable & Portable: Easy to fold and store in your pocket or bag. The foldable design keeps dust out and protects the lens. Additionally, the jewelers magnifying glass comes with 2 boxes for easy portability.Wide Application: You can use the jewelry eye loupe set for gems, jewelry, coins, stamps, rocks, clocks, hobbies, antiques, watches, electronics, weeds, etc. It is perfect for collectors, jewelers, and hobbyists, and also makes an excellent children to explore the fascinating miniature world.Colour:SilverMaterial:MetalPackage Contents:4 * loupe magnifierOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.