Product Features:  1. Using zinc one-piece shell, anti-fall strongly 2. Timestamp,Name the recording files by date automatically 3. Monitor the recording in real time/Hearing aid fuction 4. Work as voice Recorder,MP3,and USB drive 5. Play function: wire USB adapter, Previous/Next File button 6. Without speakers,no sound 7. Support voice activated mode 8. Detect low battery and save recording files automatically before power off 9. Built in rechargeable 100mAh lithium battery 10.One key to record and one key to save audio. 11. USB 2.0 Plug 12. Color: Black   Specification:  1. Recording Format: WAV 2. Music Playback Format: WMA/FLAC/MP3/APE/OGG etc. 3. Battery Recording Time: About 12 hours 4. Battery: 100mAh lithium battery 5.Memory Capacity : 8GB to 128GB(Specific to the actual product) 6.Recording method: Voice Recording 8.RecordingQuality:384kbps,192kbps,128kbps,64kbps,32kbps 9. USB Interface 2.0 10. Working Temperature: 0 to 45 degree 11. Headphone Jack: 3.5mm, dual track 12. Noise-signal Ratio: 80db 13. Size(mm):142*11(L*W*T)(Specific to the actual product) 14. Net Weight: 37g 15. Compatible System: Windows 2000&above 16.Use for: Daily,Meeting , Training , Study   Package Included:   1*Voice recorder 1*English user manual 1* USB adapter 1*USB Cable 1*Headphone 2* Extra refills