1.This stereo microscope has sharp stereo erect image over a side field view.Widely used in electric factories,laboratories,schools,PCB solder and mobile repair etc. 2.Upright binocular view head,the interpupillary distance is between 55-75mm. 3.Long working distance is about 7-11.5cm 4.Built-in top light illumination 5.Full environmental protection plastic body and easy to carry 6.Optical glass lens 7.Carton and foam inner box packing. Prevent damage in transit. Brand Name:AOMEKIE Theory:Stereo Microscope Drawtube:Binocular Eyepieces:WF10X Objective lens:2X Total Magnification:20X Total magnification 20X= (Eyepieces 10X) x(Objective lens 2X) Top Light:LED Illumination Interpupillary distance: 55-75mm Working distance: about 40mm Net Weight:about 500g Batteries:2 AA Batteries (Not Included)