This is a black version of our popular 7X-135X zoom stereo microscope mounted on a single-arm boom stand with a zoom ratio of 19:1. It comes with a binocular head with super widefield optics and sturdy single-arm boom stand. The 45 degree inclined binocular oculars and high-eyepoint optical design ensures a comfortable observation for all users including eyeglass wearers. The single-arm boom stand allows you to turn microscope head around two different axes and point it in various directions. This microscope offers high resolution, super-wide field-of-view, a 19:1 extended magnification-range, and a large maximum working-distance. The 80-LED ring-light features solid construction in a black finish, with an aluminum control-box for intensity-adjustment. It is an ideal instrument for researchers, gemologists, engravers, collectors and anyone in semiconductor and electronics industry.