Product Name: Monocular Student Microscope 640X with LED Light Model NO.: XSP-116D Principle of Optics: Differential Interference Contrast Microscope Principle: Optics Usage: Teaching, Research Shape: Rectangular Prism Kind of Light Source: Ordinary Light Stereoscopic Effect: Stereoscopic Effect Mobility: Desktop Number of Cylinder: Monocular Type: Biological Magnification: 40X-640X SA: Made in China Trademark: shinea Transport Package: Foam+Carton Box Specification: 4pc/ctn Origin: China HS Code: 9011800090 Product Description Achromatic objective 4X,10X,40X ( spring ) Eyepiece Wide field eyepieces WF10X,(WF16X optional) Viewing head Monocular headStage Plain stage with moving scale, Stage size 90mmX90mmCondenser N.A.0.65 Condenser withdisc diaphragm N.A.0.65 Focusing Coarse and fine Adjustment Power AC Input 220V or 110V,DC ouput 6V Illumination LED lamp(led lamp with chargeble optional)