200X USB Digital Microscope 1.usb portable digital microscope , 2.focus range: Manual focus ... as Project Presentation SpecificationImage SensorColor CMOS SensorControllerHigh Speed DSP( Driver Free available )LensMicro-Scope Lens , M12Focus Range0mm ... Vista , Win 7 32 bit and 64 bit.Driver LanguageEnglish,Chinese, German, Italy, Spain, Portugal Russia, ... simple user manual 200X USB Digital Microscope