This illuminated jeweler's magnifier with 40x magnification is made of durable metal with 25mm optical glass and dual LED lights. The magnifier is ideal for gem collectors, coin collectors, jewelers, hobbyists, and also makes a great gift for children who want to explore the wonderful world of little ones. Bright LED and UV light: You can see objects clearly in darkness or low light conditions with this dual LED light source. The UV light works as a counterfeit detector for items such as banknotes, passports, credit cards, traveler's checks, etc. Pocket size: It is very convenient to carry and you can use it anywhere. Requires 3 LR1130 batteries (batteries included). Contents: Jeweler's magnifier 40x x 25mm