This is a trinocular 3.5X-90X zoom stereo microscope on a single-arm boom stand with a super speed 18MP USB 3.0 digital microscope camera. It comes with a trinocular head with super widefield optics, a sturdy single-arm boom stand, a 0.5X barlow lens, and a 64 LED ring light with adjustable light intensity. The trinocular port makes it easy to use the included microscope camera. Its 45 degree inclined trinocular oculars and high-eyepoint eyepieces (WF10X/20 and WF20X/10) ensure a comfortable observation for all kinds of users including eyeglass wearers. The single-arm boom stand allows to turn the microscope head around two different axes, letting you point microscope head in various directions. This microscope offers high resolution, super widefield of view, large 6.4:1 magnifying zoom range and a 165mm (6-1/2") long working distance with the included 0.5X barlow lens mounted. The digital camera captures still microscope images, streams live video preview to your computer, and is compatible with Windows, Mac OS X, and Linux (see version information below). The 0.50X reduction lens included gives your computer screen a wider field of view. The user-friendly software for Windows offers advanced features including Stitching, EDF (Extended Depth of Focus), video recording, and measurement functions. Live video and still image capture can be set in different resolutions simultaneously. It is an ideal instrument for researchers, gemologists, engravers, and anyone in semiconductor or electronics industries.