AmScope Boom Stand Zoom Stereo Microscope 54 LED Light 3.5X-90X 3.5X-90X zoom magnification with great flatness & contrast Super widefield optics offer crystal clear stereo images 2-1/2" super widefield view and 8" large working distance Trinocular port for adding photo or video capability Flexible sturdy boom stand; 54-LED ring light with dimmer