Improve your detailed viewing with this compact easy to use eye loupe optical tool that has 15x magnification and is UV/LED illuminated. If you are examining gemstones and minerals, you will be able to detect florescence with the ultraviolet Light (UV). UV light can also help classify stones such as diamonds that do not fluoresce, as non-diamonds and fluorescence is also a way to detect heat treated stones. LEDs emits bright light that reveals the brilliance of each stone for fine detailed work. Great for craft-work, jewelers, watches, fine detailed work, inspecting antique markings, coins and many other items that require magnification to identify and view detail. Plastic body eye loupe provides 15x Illuminated UV/LED magnification. Unlimited use for UV specific documents, ink, gems, minerals, stones and more Loupe has plastic body and metal swing-away cover. Includes plastic storage case Loupe includes a small loop to attach to a neck or key chain. Requires 3AG10 Batteries (batteries are included). Battery cover removal tool included Lightweight and easy to use. Dimensions: loupe 2-1/4″ x 1-1/8″ x 1-1/8″, plastic case 3-3/4″ x 2-5/8″ x 1-1/4″.