Magnification: 400X Observation method: transmission Optical system Finite distance optical system Eyepiece H10X Objective lens Achromatic objective lens 4X, 10X, 40X Eyepiece tube Monocular observation head Converter Three-hole converter Stage Single-layer mechanical stage, coarse adjustment range: 50mm, Fine adjustment range: 1.8-2.2mm Focusing mechanism Coarse and differential dynamic focusing mechanism Illumination system Plano-concave reflector φ50mm If you have any questions, please contact us and we will have the opportunity to answer you.