Binocular Stereoscopic Zoom Microscope Parallel Optical Zoom system Eyepieces pr 10x/22mm super widefield Magnification range 8x to 50x Working distance 78mm Focusing range 105mm Illumination espiscopic with directional condensing lens LED 5W Illumination diascopic in base LED 5W LCD Touch Screen version available on each model 1.3mpx integral camera with USB and RCA output Low voltage 6V