This is a cordless stereo binocular LED microscope with viewing head. It can be used on 110V power supplies as well as running with 3 AA batteries, which means that it can be used in the outdoor fields. The microscopy has 10X and 30X two step magnifications with dual LED lights from both top and bottom sides. It has large working distance of 57mm and maximum field of view of 10mm. This stereo microscope is a good choice for people who like to collect coins, stamps, rocks, gemstones but with low budget. It is also a good choice for students who would like to inspect insects, botanical specimens and etc. There are many accessories such as 20X eyepieces, USB cameras, darkfield stages, tweezer clips, which can be attached to the microscope to make it more powerful. The package also contains a USB microscope camera. The digital camera captures still microscope images, streams live video preview to your computer. The built-in reduction lens included gives your computer screen a wider field of view