1.Built-in LED lights, can be used in dark 2.Fix focus,USB ... card,demonstration and save image and video,and use a computer present through a projector or monitorl Scan Automatically,capture ... via bundle presentation softwarel Fix focus,USB poweredl Built-in LED lights, can be used in darkl Portable and foldable,easily carry ... camera scanner/A4 portable document scanner/projector built-in LED lights