LED and UV Light: With this dual LED light source, you can clearly see objects in dark or dimly lit conditions. The UV light can be used to detect counterfeit money for bills, passports, paintings, and geological studies. It requires 3 LR1130 batteries (batteries included). 40X Magnification: The bright jeweler's loupe is made of durable metal and optical glass, featuring an authentic diopter glass lens that shines brightly in daylight without glare and magnifies up to 40x without distortion or blur. Lightweight: Weighing only 3.1 ounces and compact size, the Jewelry Eye Ring is easy to carry wherever you go. The special collapsible design allows you to easily extend the jewelry magnifier when in use and retract it when not in use, with a lid that folds to protect the lens for convenient portability. IDEAL GIFT: The magnifying glass is perfect for geological research, rock collectors, jewelers, hobbyists, craftsmen, coin collectors, stamp collectors, jewelry making, and workshop machines. An excellent gift for students and children who will love discovering the amazing little world around them. Package Contents: 1 x Magnifying Glass Note: We sell only the items shown in the first image; other items in different images are not included. Note: Due to differences in lighting and displays, the images may not accurately reflect the actual color of the product. Note: All measurements are manual; allow a size error of 1-3 cm.