This is a perfect microscope for students to learn science. There are 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. The LED illumination system uses either an outlet (adapter included) or three AA batteries (or re-chargeable batteries). It is an ideal microscope for home school or for students in elementary to high school. It is also an excellent instrument for hobbyists. Bundle also includes a 25-piece prepared slide set, 5 pairs plastic tweezers, a 50-piece blank slide set with 100 glass cover slips and a BONUS – a handheld multi-USB digital microscope for PC and Android! Features : A Great Affordable High Power Microscope for Students of Sciences 45° Inclined 360° Swiveling Monocular Head with Locked-in Eyepiece Built-In Contemporary LED Illumination System Using either an Outlet or Batteries Plain Stage with Clips and Stain Resistant Finish Fully Coated Optical System High Resolution Offering Sharp Images Five Levels of Magnification: 40X-100X-250X-400X-1000X Single Lens Condenser and Six-Hole 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 Specifications : Head: 45 degree inclined monocular Eyepieces: WF10X and WF25X Objectives: 4X, 10X, 40X Condenser: single lens with 6-hole 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 and 40X One Widefield 10X Eyepiece One Widefield 25X Eyepiece One Power Adapter One Dust Cover Two Clips User's Manual Download 50 Pre-Cleaned Blank Microscope Slides and100 22x22mm Square Cover Glass 5 Pack Plastic Disposable Tweezers AmScope PS25W 25 Glass Prepared Microscope Slides with Wooden Box 50X-500X 0.3MP Handheld Multi-USB Digital Microscope with LED Illumination for PC and Android