... a general control unit and rich peripherals including GPRS, Bluetooth, Camera, MP3, MP4, U-disk, TF card. ... Support serial interface & USB interface11, Support Bluetooth12, Support GPRS13, Support Mobile communication, SMS, MMS14, Support earphone output15, Support internal ... interface, SD card, SIM card, digital interface level,USB,2 serial interfaces, keys,Camera,ADC,GPIO,parallel interface ...