Dear customers, there are so many products in this shop, you can choose your favorite products here. We will provide you with quality products and services. If you have any questions about the product, please contact us in time. 2.Upright binocular view head,the interpupillary distance is between 55-75mm. 3.Built-in incident light 3V 4.Plastic body and easy to carry. 5.Durable package. 6.Present dust cover. 7.Send with phone holder. Easy Compatible with taking pictures. Theory:Stereo Microscope Drawtube:Binocular Total Magnification:40X Total magnification40X= (Eyepieces 20X) x(Objective lens 2X) Eyepieces:WF20X Top Light:LED Electrical Illumination Net Weight:500g
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