This biological microscope comes with an LED illumination system that can be powered by either batteries or wall-power supply . It is specially designed for both indoor and outdoor applications. It is portable and can be taken out to field sites. It comes with a 45 degree inclined monocular head with locked-in eyepiece, three AA batteries, a 110V-4.5V plug transformer, full optical glass elements, and solid metal body. It offers five levels of magnification, 40X, 100X, 250X, 400X and 1000X. It is an excellent instrument for elementary and middle school students to learn science. It is an ideal home school or family microscope. Along with some prepared biological-specimen slides, this kit also includes a slide-preparation kit, with blank slides, red and blue stains, and several tools to put together your own specimen slides. Features: A great portable LED microscope! Easy to take to field sites Powered by batteries or low voltage wall power for your children's safety Plug transformer included Excellent instrument that is easy to operate 45 degree inclined 360 degree swiveling monocular head with locked-in eyepiece 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 Two eyepieces included Built-in LED illumination system Single lens condenser and disc diaphragm Dual focusing control knobs Full optical glass elements 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 Includes Slide Preparation Kit  Specifications: Head: 45 degree inclined 360 degree swiveling monocular Eyepiece: WF10X and 25X Objectives: 4X, 10X, 40X Condenser: single lens with disc diaphragm Stage Dimensions: 3-1/2" x 3-1/2" Illumination: 110V wall power (included) or three batteries (not included)  Packing List : Monocular microscope body with LED illumination Objectives: 4x, 10x and 40x 10x eyepiece 25x eyepiece Dust cover Clips (pair) User's Manual Download 110V/60Hz DC 5V adapter One 5pc specimen slide kit One 5pc blank slide kit 1 Bottle of Eosin 1 Bottle of Methylene Blue 1 Tweezers 1 Swab 1 Set of ID Stickers 1 Petri Dish 1 Pick 1 Stirring Rod 1 Vial 1 Set of Lens Tissues Â