This biological compound microscope is specially designed for students. It offers six levels of magnifications, 40X, 64X, 100X, 160X, 400X and 640X. It comes with full optical glass elements, all metal body construction and a beautiful ABS plastic case. It is a great entry-level microscope for home school or for students to learn science. Features: Six Levels of Magnification: 40X-64X-100X-160X-400X-640X Beautiful ABS Case Unbeatable Low Price Fully Coated Optical System Giving Clear Images Great Instrument for Viewing Biological Slide Specimens Excellent Instrument Easy to Operate Ideal Scope for Students and Home Schools! Three DIN Achromatic Objectives Two Eyepieces Included Precise Ground Glass Lens Optical Glass Elements Solid Metal Frame Construction All Metal Mechanical Components Substage Light Aperture Adjustment Dial Rack-Stop Mechanism to Protect Slides and Objectives Coarse and Fine Focusing with Control Knobs on Both Sides Rugged Solid Metal Frame No Danger to Your Kits - Mirror Reflected Nature Light Illumination Manufactured under ISO 9001 Quality Control System Excellent Five (5) Year Manufacturer Warranty Specifications: Head: upright monocular Nosepiece: triple Mechanical Tube: 6-1/4" {160mm) Eyepieces: wide-field 10X and 16X Objectives: 4X (0.1 NA), 10X (0.25 NA), 40X (0.65 NA) Microscope Case: ABS Stage Dimensions: 3-1/2" x 3-1/2" Packing List : One Monocular Microscope Three Objectives, 4X, 10X and 40X One Widefield 10X Eyepiece One Widefield 16X Eyepiece Two Clips One Molded ABS Case User's Manual Download Shipping Weight: 10 lbs