Also can connect with samrt mobile phones Pocket Microscope with a Powerful 100x-150x Magnification Range Bright LED Light is Powered by 3 Battery (not included Designed to be Compact, Lightweight and Portable.Remove the battery before storing the microscope for an extended period Nature discovery for children, inspect stamps banknote jewelry antique for collectors, check fiber for textile/printing industry, Manufacturer: SkyPOOU