... , Dolphin Office software: WORD, EXCEL, POWERPOINT, PDF, TXT, Audio Formats support: Support MP2,MP3,WAV,AAC,WMA formats ... ID3 Tag searching, searching by folders, Album, self-definition audio effectVideo Formats support: MPEG 1/2/4, MIPG, H263 /, ... small type charging port,DC9V inputEarphone/Video: 3.5mm earphone+composite video outputKey Button: Touchable Button: HOME, MENU, BACKBattery: 1500mAH / 3 ...