The 40X Magnifying Lighted Jeweler's Magnifier is made of durable metal and is durable and long lasting. The optical glass is 25mm long and is equipped with LED lights. A magnifying glass with LED lights allows you to see objects clearly in the dark or in low light conditions. Jeweler's magnifying glass can be used as a counterfeit detector for banknotes, passports, credit cards and travelers checks. EASY TO CARRY: Pocket size, you can use it anywhere, it requires 3 LR1130 batteries (including batteries) and is easy to install. Foldable Design: Easy to use, just take out the jewelry magnifier and use it when not in use, without taking your narrow stance. Jewelry Magnifier Magnifier is perfect for rock collectors, coin collectors, jewelers, hobbyists and a great gift for kids who want to explore the fabulous little world. Multiple uses: Can be used for currency checks, watch repairs, fine prints, photo analysis, coins and stamps. Various industrial uses (watchmaking, jewelry), medicine, coins and stamp collectors, geography, circuit boards and printing, gardening, education, home and office, etc. All metal and durable Made of durable metal with 25mm long optical lens. LR1130 battery powered, easy to install With LED lighting LED lights are great for illuminating the right amount and angle of light for your use. It allows you to see objects clearly in the dark or low light, which is very suitable for identifying counterfeit money, passports, paintings, geological research, organic material, etc. . Light to transport Small and light, with a nice box, easy to carry. The mini size and 40x 25mm lens are easy to carry, you can use it anywhere, making the little details in life clearer. Product details: Name: 40X Jeweler's Magnifying Glass Jewelers magnifier 40X * 2 pieces Battery model: LR927 (included) Product size: 8cm x 2.2cm Voltage: 1.5 V Objective diameter: 21 mm Lighting: LED lights