* One button voice activated recoding
* USB retractable
* Charging and recording, extend recording time
* Recording format: WAV
* Professional build-in microphone
* SHQ recording mode, Recording bit rate: 128K bps
* Recording time 4GB: about 70 hours / 8GB: about 140 hours
* Build-in high capacity lithium battery, lasting about 15 hours
* USB disk function