AmScope 40X-1000X Metal Frame Glass Lens Student Microscope + 50 Prepared Slides + Book 360 degree rotatable monocular offers five magnifications 40X-1000X Sturdy All-Metal framework w/ single lens condenser & disc diaphragm Cordless LED illumination uses either an outlet or 3AA batteries 50pc assorted specimens of plants, insects and animal tissues Microscope book: The World of The Microscope