taxi display system can rotate advertisement 3G,wifi,ethernet sunlight readable touch screen ... Device(Flash)4 GB-36GBNetworkLAN(RJ45)Built-in 3G ModuleWiFiPower SupplyCar power, Battery,Power Over EthernetLanguageArabic, ... HesdrestCAR headrestCar headrestStorageTF cardTF cardHard diskOptionsBattery,Wifi Battery, WIFI,Battery, WIFI, Taxi Display Computer System With Touch Screen, 3G, WiFi