7" WIDE TFT SCREEN(1440*234)                                                                                  16:9 & 4:3 SCREEN MODE AVAILABLE                                                                         1W*2 BUILD-IN STEREO SPEAKER                                                                                VOLUME BUTTON  ALSO AVAILABLE ON MAIN UNIT                                               VIDEO SYSTEM:NTSC/PAL/AUTO                                                                               TWO GROUPS OF ADD-ON DISPLAY JACKS                                                           BUILD-IN HIGH CAPACITY LI BATTERY                                                                       LOW VOLTAGE WARNING                                                                             EARPHONE JACK  FOR PRIVATE ENTERTAINMENT                                                  FULL FUNCTION REMOTE CONTROLLER                                                              BUILD-IN USB AND 3-IN-1 CARD READER