This is a perfect, entry level microscope with a 640x480 pixel USB digital camera. There are five magnification settings, 40X, 100X, 250X, 400X and 1000X. It comes with full glass optical elements, metal framework, 45° inclined 360° rotating monocular head, LED illumination system and a 640x480 pixel detachable digital camera. The LED illumination system uses either an outlet (adapter included) or three AA batteries. The digital camera captures still images and video, and allows you to view a live stream on your PC. The included software for Windows offers image-development and measurement tools, as well as advanced compositing features such as image-stitching and extended-depth-of-focus. Independent preview and capture resolutions allow you to view high-speed video while capturing high-definition images. On Mac computers, the camera can be used as a driverless imaging device, compatible with various applications, such as ProScope and Photo Booth. Features include... 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 and 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 warranty Laptop / PC NOT included Specifications... Head: 45° 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) Camera Specifications... Sensor: Aptina Sensor Type: CMOS Sensor Size: 3.58x2.69mm Pixel Size: 5.6 Resolution: .35MP (640x480) Frame Rate: 30@640x480 Compatibility: Windows (32/64 bit) XP/Vista/7/8/10, Mac OSX (Mac software not provided) Software Specifications... OS Requirements: Windows (32/64 bit) XP/Vista/7/8/10 Hardware Requirements: Intel Core2 2.8GHz or comparable processor, 2GB RAM, USB2.0 port