AmScope 3.5X-90X Zoom Stereo Microscope w 4-Zone 144-LED Light +3MP Digital USB Camera 3.5X-90X Super widefield zoom magnification power with crystal clear images 2-1/2" (65mm) super widefield view and 8" (200mm) working distance Sturdy all-metal pillar stand with tension-adjustable focusing 144-LED ring light with 4 light zones and individual control 3MP digital camera with advanced editing &amp; measuring software for Windows XP/Vista/7/8/10