Specifications: 3"(75mm) in Diameter for 5X Lens, 0.78"(19mm) in Diameter for 11X Bi-focal Lens 5X Lens Focal Length: 4"(100mm), 11X Lens Focal Length: 1.7"(45mm) Two Adjustable brightness levels: Gentle and Bright (50%-100%) Premium unbreakable ABS material. Alternative use: flashlight. Can be handsfree or handheld. Products Include: 1 x Magnifying Glass 1 x Color Box 1 x Manual 1 x Data cable Note: 1.Tough Construction Portable and tough enough to take with you wherever you go. 2.The durable construction of the lens and sturdy handle means even kids can use it safely for science experiments. Features: This led magnifying glass is perfect for reading/viewing small prints or objects Map, jewelry, Newspaper, Magazine. Designed with dual-circuit, the magnifying glass can be lighted on different occasions:powered by the USB cable OR by 3 AAA batteries (NOT INCLUDED). There are two brightness levels which provide excellent light for illuminating detailed surfaces. 5X magnification power for the main magnifying lens with 11X bi-focal lens for more detail tasks. The 3 rotatable joints make this led magnifier fully adjustable. Is designed for anyone with vision problems such as macular degeneration or those who need to constantly focus up close on their work or hobbies.