1. 3 record quality options : PCM,HQ,LP,record time up to 560 hours in LP mode 2. Employ intelligent dual-core noise reduction mode and built-in dual-receptor microphone 3. Sound recorded from all directions with less background noise 4. Can eliminates the sound of breathing; smart voice activated recording 5. Support landline telephone recording,mp3 player,A-B repeat playback function 6. Voice-activated option: With this option turned on, the recorder will start recording when sound is audible and pause when there's no sound 7. Can also be used as an MP3 music player 8. Just connect to your computer and copy your MP3 files to the recorder. Also plays WMA and WAV files.