AmScope 40X-2500X Infinity Kohler Siedentopf Research Compound Microscope Superior infinity optical system offers crisp clear images 40X-2500X six extreme widefield magnification settings Backward nosepiece configuration allowing spacious space for comfortable observation Wide band voltage (85-230V) Kohler halogen illumination with Iris base condenser 9MP digital camera with advanced editing &amp; measuring software for Windows XP/Vista/7/8/10