AmScope 3.5X-45X Circuit Board Boom Stereo Microscope + 144 LED 3.5X-45X zoom magnification power with crisp sharp images 2-1/2" (65mm) SUPER widefield of view and 8" (200mm) large working distance Powerful 144-LED intensity and lighting direction adjustable ring light 3D boom stand allowing you to point microscope head in ANY direction desired Trinocular port for adding photographic or video capability