Product Description: Batteries: 3*LR1130 (included). Voltage: 1.5V. Lens Diameter: 25 mm. Magnification: 40x Weight: 158 g Suitable for: industrial purposes, medical sciences, coins and stamps, geography, circuit boards and printing, home and office Package Contents: 1 * Magnifying Glass, 3* Battery Description: Powerful 40X Magnification: This LED and UV jeweler's loupe offers powerful magnification, allowing you to examine the finest details. Enjoy distortion-free magnification, ideal for watchmaking, inspecting small objects, reading tiny text, or examining gemstones and diamonds. High-Quality Illumination: Even in low light, the LED and UV light ensures a crystal-clear, sharp image. The UV light is also useful for currency verification and jewelry identification. Requires 3 LR927 batteries (included). Portable Design: Simply slide out the jeweler's loupe for use and slide it back into its protective case for storage. The compact case allows for easy pocket storage, saving space. Multifunctional: This magnifying glass is perfect for coin and stamp collectors, jewelers, hobbyists, industrial use, and makes a great gift for children to explore the wonders of the miniature world. Constructed from optical magnifying glass and a full metal body, it's lighter, stronger, more compact, and more practical.