This is one of the best student microscopes in the market today. With extra features such as the rotatable head, fine focus control, and the option to add the mechanical stage, this scope is a popular choice for educational use. Quality metal construction, and optics conforming to the universal standards (DIN) for microscopes, makes this reliable microscope a great value. Features: 10X Eyepiece with scale pointer; Monocular head rotatable 360 degrees; 3 DIN Objectives 4X, 10X, 40X; Total magnification 40X to 400X; Coaxial coarse and fine focusing; Disc diaphragm; Variable intensity 4.5V LED cool illumination system; Built in rechargeable battery with detachable AC power cord; Vinyl dust cover; CE certified. Advantages of LED illumination: Life time of LED bulb is 100,000 hours; LED consumes very little power; Fully charged battery provides up to 15 hours of normal use; Versatile power allows cordless use for portability; Cool LED prevents focus deviation caused by heat-deformed equipment. Add an optional Mechanical Stage Upgrade (MA81, sold separately) for a full-featured, reliable instrument for a fraction of the cost of professional microscopes.