The sliding magnifier comes in a pouch with 3 magnifications: 10X, 20X, and 30X Integrated LED and UV light | Lens diameter: 10X (25mm), 20X (12mm), 30X (8mm) Powerful magnification without image distortion Small and lightweight | Weighs only 45 grams Convenient and portable | Powerful pocket magnifiers with light - Three clear and increasingly powerful magnifiers for seniors, hobbyists, professional jewelers, watchmakers, and collectors of coins and stamps. And high-quality ABS, this magnifier is lightweight and portable, yet sturdy enough to take anywhere. Take it when you travel. Also includes 1 black synthetic leather pouch for easy storage and extra protection. UV light is also included to detect counterfeit currency. The lights are powered by three included LR44 button cell batteries; a new set of batteries lasts for hours. Lens Specifications: 25mm - Magnification: 10x - Focal length: 25mm - 12mm Jewelry Loupe: 20x magnification - Focal length: 13mm - 8mm - High-performance lens: 30x magnification - Focal length: 5mm - Additional features: Sliding design - Lights up when turned on. The black light comes with a leather case - requires three LR44 batteries (included).