This item is to be attached to your miscrocope in oder to observe the objects on your computer. With the provided software, you can make and save videos and pictures for later viewing. That also allows other people to see on the screen what you see through the microscope. Therefore it is particularly recommended for science classes. Easy to install and easy to use, this will provide a lot of fun and it will add interest to science.Sensor: 1/2 Inch 1.3 Megapixel CMOSPixel Size: 5.2?m * 5.2?mSpectrum response: 400nm---1000nmSensitivity: 1.8 V/lux-sec@550nmConnection to Microscope: Ocular tubeSize of Ocular Tube: 31.75mm - 24.5mmPictures:- Format: JPEG- Resolution: 1280x1024Video:- Format: WMV- Resolution: Up to 1280x1024- FPS: 10 to 16 Sensitivity:1.8 V/lux-sec@550nmPC Interface: USB 2.0Shutter: ERSPower: USB port USB Cable Length: 1.5mDimensions: 65 x diameter: 65 (mm)Opérating Systems: Windows 2000, XP, Vista, 7