> Specifications and Details China Microscope, Great Quality Imaging at a Super Low Price! High Power Professional Compound Binocular Microscope! Great for Viewing Biological Specimens on Slides! High transmission optical system, combined base and arm design and wide range of accessories make it as ideal instrument for Laboratories, Clinics, Veterinarians, Students, Teachers, and More! > Standard Outfit Viewing Head: Compensation Free Binocular Head, Inclined at 30 degree, rotatable 360 degree; 55 to 75mm InterPupillary Distance. Eyepiece: Wide Field Eyepiece WF10X, P16X Objectives: CF High-contrast Objective 4X, 10X, 40X, 100X Nosepiece: Backward Quadruple Nosepiece Stage: Double Layers Mechanical Stage 140X140mm/75X50mm Condenser: NA1.25 Abbe Condenser with lris Diaphragm and Filter, Rack & pinion Adjustment Illumination: Halogen Lamp 6V/20W,Brightness Adjustable Focusing: Coaxial Fine and Coarse Focusing; Coarse Adjustment Travel Range: 20mm; Fine Adjustment Division: 0.002mm. Power supply: AC input 230V or 110V, DC output 6V