... with projector ,TF card 5.0MP portable A3 USB document Scanner Spec: TypeDocument ScannerScan Element TypeCMOSColour ... QVGAScan resolution400dpiMemory cardTF cardExport formatYUY2Image Rate30fps at VG with USB bandwidthImage ControlBrightness, exposure, sharpness, color, gain, hue/ ... supplyBuilt -in Lithium battery(5V,1200mA) / 5V USB cable supply Battery chare time3 hoursWorking time 50 hoursProduct ...