Microscope Eyepiece Type Binocular Microscope Type Stereo Stand Type Pole Light Source LED Optical Field of View 20 mm Max Specimen Height 195 mm Optical Magnification 1X to 3X Maximum Magnification Capability 40X Base Dimensions 11 1/2 in x 10 1/2 in Manufacturers Warranty Length 5 yr Working Distance 88.9 mm Eyepiece Protractor No Features Dual Magnification Mechanical Stage Option Optional Eyepieces Precision Optics Upper and Lower LED Illumination