... Samsung S3C2416 ARM9 based, WinCE 5.0 OS AV input *2 RS232, Max supports 4ports. WiFi,GPS external optional 7 inch ... )Support audio format: MP3, WMA, WAV…Support video format: MPEG1/2/4, ASF, WMV9, JPG, BMP…Audio output: 3.5mm mini ... 1PCTouch pen 1PCUSB cable 1PCAuto stand 1PCAV cable 2PCSP/S 2 to RS232 cable 1PCInstruction manual 1PCCar power (optional) 1PCSD memory ...