AmScope 3.5X-45X Trinocular Dissecting Zoom Stereo Microscope with 144-LED 4-Zone Light 3.5X-45X 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 The trinocular port uses the third port for camera capabilities giving you the remaining two ports to view your specimen