AmScope ZM-2TZ Professional Trinocular Stereo Zoom Microscope, EW10x Eyepieces, 3.35X-90X Magnification, 0.67X-4.5X Zoom Objective, Upper and Lower Halogen Lighting, Pillar Stand, 110V-120V, Includes 0.5x and 2.0x Barlow Lenses