This trinocular 20X-40X stereo microscope on a single-arm boom stand utilizes a fully coated optical system. It comes with a trinocular head with super widefield optics, a bright 144-LED ring light, and a sturdy single-arm boom stand. The trinocular port makes it easy to add photographic or video capability to the microscope. Its 45 degree inclined trinocular oculars and high-eyepoint optical design ensures a comfortable observation for all kinds of users including eyeglass wearers. The 144-LED ring light provides bright, shadowless illumination across the field of view and has a light intensity control dial located on the ring light. The single-arm boom stand allows to turn the microscope head around two different axes, letting you point microscope head in various directions. The microscope provides high resolution clear images, super widefield of view and large working distance.