AmScope B380B 40X-2000X 1W LED Vet Binocular Compound Microscope Eight-level widefield magnification settings from 40X to 2000X High quality optical lenses and Abbe condenser with iris diaphragm Backward nosepiece allowing spacious space for comfortable observation Tension-adjustable coaxial coarse &amp; fine focus 1W bright LED light equivalent to 10W halogen light