This dual light high power microscope has both incident and transmitted LED light sources that allow for both the viewing of opaque objects lit from above and the viewing of translucent specimens lit from below. Designed for students to learn science for years of continued observations it has full optical glass elements metal framework two eyepieces (10X and 25X) 360 degree rotatable monocular head and coarse & fine focusing. The microscope offers five magnification settings 40X 100X 250X 400X and 1000X. The light sources use either an outlet (adapter included) or three AA batteries (included). This microscope is perfect for academics in home school for students in elementary to high school. To get things going right out of the box we ve included the book The World of the Microscope as well as a 10-piece slide kit with five biological specimens and five blank slides. The picture-filled book will peak the student s interest and the prepared slides will provide first-hand experience. Features : A Great Affordable High Power Student Microscope with Coarse & Fine Focusing and Top and Bottom Lights! 45 Degree Inclined 360 Degree Swiveling Monocular Head with Locked-in Eyepiece Built-in Incident and Transmitted LED Illumination System Plain Stage with Clips and Stain Resistant Finish High Resolution Offers Sharp Images Five Magnifications 40X 100X 250X 400X and 1000X Single Lens Condenser and Disc Diaphragm Focusing Control Knobs on Both Sides All Coated Optical Elements Precise Ground Glass Lens Full Metal Mechanical Components Solid Metal Frame with Stain Resistant Enamel Finish Manufactured under ISO 9001 Quality Control Standard 10pc Slide Kit of Five Biological Specimens and Five Blank Slides Included Includes a Fantastic Book About Microscopes 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 Eyepieces: WF10X WF25X Objectives: 4X 10X 40X (spring) Condenser: 0.65 NA single lens with 6-hole disc diaphragm Stage Dimensions: 3-1/2 x 3-1/2 Illumination: LED 1W top and bottom Power Supply: 110V/60Hz (adapter included) or 3AA batteries (not included) Packing List : One Monocular Microscope with Three Objectives and Top & Bottom Lights One Widefield 10X Eyepiece One Widefield 25X Eyepiece One Dust Cover Two Stage Clips One AC Power Adapter Three AA Batteries User s Manual One 10pc slide kit with 5 specimen slides and 5 blank slides One book: The World of the Microscope