1:Digital voice recorder + MP3 player2:Time setting:Real Time Display3:Support a key lock screen function4: High-quality studio recording MICROPHONE, more clear5: Connecting the terminal box can record telephone calls6: Automatic recording when have sound, no sound automaitc uspended7: Support external audio speakers playing loud sound HD8: support loop, sound mode selection9: Free driver U disk function, upload and download files handy10: Recording bottom electrical autosave file function11: Support one-button recording function12: Support AB repeat function13: You can play MP3, WMA music file14: The clock function15: high-capacity polymer battery of environmental protection(220mAh)16:Low battery indicating function