... battery, Convenience, Safety, Green.Super powerful ESP (Electronic Shock Protection)Offer fullest car seat backpack, enjoy car ... easy system shift Rechargeable battery, about 120--180 minutes of Playback with included battery pack·Standard AccessoriesAudio/ Video ... 3" panel portable dvd with AnalogTV,Game,MPEG4, DIVX, USB, Card Reader function and build-inside rechargeble lithium battery