... and wheels for easy carring.3. With DVD player,support DVD,VCD,CD,MP3,MP4 formate 4. with ... reader Jack, can read and play song.5.With dvd display screen,can display time and music work ... jack,can connect with outer DC12V battery12.With 5.5Ah battery ,Low-voltage protection circuit.13. ... metalConnectorUSB and SD card reader jack .Competible format dvd,svcd,MP3,MP4,WMA,VCD,DVCD,CD,JGPAccessoriesmanual ...