This advanced microscope package comes with a high power microscope a 10pc slide kit and the microscope book The World of The Microscope . It is a great package for students to learn science. The microscope offers three magnification settings 40X 100X and 400X. It has full optical glass elements metal framework 360 degree rotatable monocular head coarse & fine focusing and the LED illumination system that uses either wall-power (adapter included) or three AA batteries (or re-chargeable batteries). The 10-piece slide set includes five blank slides and five prepared slides: pine stem sunflower stem onion epidermis cotton stem and house fly leg. It is an ideal microscope for home school or for students from elementary to high school. It is also an excellent instrument for hobbyists. with retail value $400. Features : A Great Affordable High Power Student Microscope with Coarse & Fine Focusing for Learning Sciences 45 Degree Inclined 360 Degree Swiveling Monocular Head with Locked-in Eyepiece Built-In Contemporary LED Illumination System Using either Wall-power or Batteries Plain Stage with Clips and Stain Resistant Finish Fully Coated Optical System High Resolution Offering Sharp Images Three Levels of Magnification: 40X 100X 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 Five blank slides Five prepared slides: pine stem sunflower stem onion epidermis cotton stem and house fly leg 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 Objectives: 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 Microscope Three Objectives 4X 10X 40X One Widefield 10X Eyepiece One Power Adapter One Dust Cover Two Clips User s Manual One 10 Slide Kit: Five Blank and Five Prepared One Microscope Book Shipping Weight: 6 lbs