This is a perfect microscope for students to learn science, offering five magnification settings, 40X, 100X, 250X, 400X and 1000X. It comes with full optical glass elements, metal framework, 360° rotatable monocular head, and the LED illumination system that uses either wall-power (adapter included) or three AA batteries (or re-chargeable batteries). It is an ideal microscope for home school or for students from elementary to high school. It is also an excellent instrument for hobbyists. Features : A Great Affordable High Power Student Microscope for Sciences45° Inclined 360° Swiveling Monocular Head with Locked-in Eyepiece Built-In Contemporary LED Illumination System Using either Wall-power or BatteriesPlain Stage with Clips and Stain Resistant Finish Fully Coated Optical System High Resolution Offering Sharp Images Five Levels of Magnification: 40X, 100X, 250X, 400X and 1000X Single Lens Condenser and Disc Diaphragm Focusing Control Knobs on Both Sides Full Optical Glass Elements Precise Ground Glass Lens All Metal Mechanical Components Solid Metal Frame with Stain Resistant Enamel Finish Manufactured under ISO 9001 Quality Control Standard Excellent Five (5) Year Factory Warranty Unbeatable low price Guaranteed or the Difference Back! Satisfaction Guaranteed or Your Money Back! Specifications : Head: 45 degree inclined monocular Eyepiece: WF10X & 25XObjectives: 4X, 10X, 40X Condenser: single lens with disc diaphragm Stage Dimensions: 3-1/2" x 3-1/2" Illumination: LED Power Supply: 110V/60Hz (adapter included) or 3 AA batteries (not included) Packing List : One Monocular MicroscopeThree Objectives, 4X, 10X 40X One Widefield 10X Eyepiece One Widefield 25X Eyepiece One Power AdapterOne Dust Cover Two Clips User's Manual