This is a perfect microscope with a 640×480 pixel USB digital imager, or camera, 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 degree rotatable monocular head, the LED illumination system and a 640×480 pixel detachable digital imager. The LED illumination system uses either an outlet (adapter included) or three AA batteries (or re-chargeable batteries). The digital imager captures microscope still images and streams live videos on your computer screen while being compatible with Windows 2000/XP/Vista/7/8 & Mac (Driver Free). It is an ideal microscope for home school or for students in elementary to high school. It is also an excellent instrument for hobbyists. It comes in its factory sealed original box, brand new, with a retail value of $500.