... .5 inch Indoor LCD Digital SignageCategory: Digital SignageHD Digital SignageMarket Application:Airport, bus station, subway, building, shopping mall, etc.Featuresl Digital display with LCD Screen, it ... has, such as USB, SD card.l Extending function: wifi, 3G, GPS, blutooth, LAN port, USB portl Services ... NAND Flash 2Gl DDR2 256Ml 21.5 inch TFT-LCD, resolution 1024×768l 21.5 inch four-wire resistive ...