Features: brand new and high quality Eye loupe is great for rock collectors, coin collectors, jewelers, hobbyists, and also makes a great gift for the kids to explore the fabulous tiny world. It is very convenient to carry and you can use it anywhere. It requires 3 LR1130 batteries (Batteries are Included). You can see objects clearly in dark or insufficient light conditions with this dual LED light source.It also works as a detector for things such as the paper currency, passports, Credit cards, and traveler's checks etc. This 40X magnifying glass Illuminated Jeweler Loupe is built from durable metal with an optical glass that is 25 mm in length and has a dual bright LED light. Just Pull Out the Jewelry Magnifier to Use, and Put It Back When Not In Use. Specifications: Material: Metal Lens Diameter: 25mm Battery model :LR1130 (included) Magnification:40X illumination: LED Light & with currency detection function UV light Package Includes: 1 x Jewelry Magnifier note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.