... using USB connection 0.35MP USB Portable Digital Zoom Spotting-scope is a digital compound spottingscope, composed of a 0.35MP USB digital camera ... switch, setting, shoot,, full screen view.Image edit: picture turn, zoom, cut, modify, email, print Specifications Sensor parameter1/4" 0.35 ... / manualUSB cable10mO/P compatibilityWindows--XP2,Vista 0.35 MP USB Digital Zoom Spotting-scope with Image Sensor