... certification, 7''touch screen,65536 colors LCD display, 800*448 pixels, USB port and RS232,485,422 ... port 7 inch touch screen, streamline design,65536 true colors display ... inch touch panel, 65536 TFT true color, 800*448 pixels, double USB data saving ports, one USB ... inch touch panel, 65536 TFT true color, 800*448 pixels, double USB data saving ports, one USB ...