AmScope 20x-40x Stereo Microscope with USB PC Digital Camera Two magnification power settings 20X & 40X Flexible incident (top) and transmitted (bottom) lights Sturdy arm stand with forward widefield optical glass binocular head and all metal framework 0.3MP camera captures still images and streams live videos Advanced editing & measuring software compatible with Windows XP/Vista/7/8, Mac OS 10.6 & up and Linux