Exclusive to JTV and patented technology by our manufacture! This 10x triplet GemVue loupe combines all the features you want in one superior tool. Large 21mm lens offers the large viewing area. Matte black frame reduces glare and darkfield illuminatio built into the lens! LED light ring illuminates gemstones or jewelry with the flick of a switch! A UV light is incorporated as well to test stone flouresence. Includes leather carrying case, battery key, and LR927 button cell batteries included.