... touch screen operationWith USB/SD portsBuild-in bluetooth for hand free callGPS support voice and handwriting ... GPS Voice reminding priority function, supporting 3D mapSupport WIFI,3G networkingVolume of each function can be independently ... double SD,USBNetwork and application program extension: Support WIFI,3G,Bluetooth(optional) and WORD,EXCEL,PDF ... HEPA: 6.2 inch Car DVD WIFI 3G for Hyundai Sonata