A magnifying glass with LED lights allows you to see objects clearly in the dark or low light. The jeweler's loupe can be used as a counterfeit detector for banknotes, passports, credit cards and traveller's checks. The 40X lighted jeweler's loupe is made of durable and long-lasting metal. The optical glass is 25mm long and has a bright double LED light. Easy to carry: pocket size, very convenient to carry, you can use it anywhere, it requires 3 LR1130 batteries (including including batteries) and is easy to set up. Foldable design: Easy to use, simply remove the magnifier for normal use, then put it back when not in use. It will not occupy a narrow position. Jewelry loupes are perfect for stone collectors, coin collectors, jewelers, hobbyists and a great gift for children to explore the fabulous little world.