National Optical 161-ASC Dual-View Monocular Compound Microscope， WF10x Eyepieces， High-Contrast Objectives， 40x-1000x Magnification， Brightfield， Halogen Illumination， Abbe Condenser， Iris Diaphragm， Mechanical Stage， 110V<img src="http://ecx.images-amazon.com/images/I/41eK6%2BW52HL.jpg" noproxy>