Digital voice recorder & USB disk- HIFI digital voice recording, sound effect is much better than other digital recorder such as MP3 player.- Built-in memory capacity: 2GB, 4GB or 8GB(Optional)- Power supply: built-in Rechargeable Lithium battery- To charge battery simply via USB connection- With on-off switch- Recording file format:WAV- Recording bit rate:128K bps- with 4GB memory: Recording time 48 hours

8GB USB Disk Voice Recorder, Audio Reocrder, Hidden Voice Recorder