Theory: Biological Microscope Drawtube: Trinocular Magnification: 40X-1000X Illumination: LED Illumination Power Supply: 100 ~ 240 V Light Source: Adjustable LED Lights Focusing: Coaxial Coarse & Fine Working Stage: Double Layer Mechnical Eyepiece: W Eyepiece WF10X Nosepiece: 3 Holes Objective: 4X 10X 40X 100X Color: White