AmScope 3.5X-90X TRINOCULAR STEREO BOOM ZOOM MICROSCOPE w VARIABLE 144-LED LIGHT, Awarded #1 2017 Top Microscope by Ezvid 3.5X-90X 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