Zoom Lighted Pocket Microscope with 20x-60x Power Magnification | Must Be Held Flat Against the Surface for Ideal UseLED Lighted with Internal Aspheric Lens System which provides Crystal Clear and Distortion-Free Image Quality | Great Field Microscope for Kids, Students, Hobbyists and ProfessionalsCompact, Lightweight and Portable Design | Perfect Hobby Microscope For Viewing Trichromes, Stamps, Coins, Fabric, Bugs, Nature, Printing, Electronics and MoreEye Relief: 8.1mm - 9.7mm | Weight: 1.9 oz. (excluding battery) | Product Dimensions (LxWxH): 1.8 inch x 1.1 inch x 3.9 inch LED Lighted Field Microscope with 20x-60x Power Zoom Magnification The Pocket Micro from Carson is an LED lighted pocket microscope that contains a 20x-60x power zoom magnification range. For ideal use, hold the microscope flat against the surface and make sure the LED light is activated. Begin at the lowest 20x magnification and proceed to get your subject in focus using the focusing dial. Then, proceed to increase the magnification to your desired range by turning the zoom dial. Aspheric Lens System For Precise Image Quality This field microscope contains an internal aspheric lens system. An aspheric lens system allows the light rays passing through the lens to converge at a single focal point which provides for a sharp, clear and distortion-free image. Perfect Microscope for a Wide Range of Hobbies, Tasks and Crafts This pocket microscope is perfect for examining plant buds, coins, stamps, bugs, nature, electronics, fabric, printing and so much more. It is a great beginner microscope for children, students,hobbyists and even professionals. The Pocket Micro contains an extremely ergonomic, compact and lightweight design. It is powered by 1 AA battery (not included). Backed by Carson. /b> It is backed by Carson. Carson will repair or replace your pocket microscope if it is found to have manufacturing defects in materials or workmanship.