MODEL:B6538DR5817HK4468 Product Features: 1. Shell made from acrylic material, anti-fall strongly 2. Professional recording pen chip of ATJ2129,HD recording 3. Timestamp,Name the recording files by date automatically 4. Timer Recording and turn on at your set time 5. AGC function, adjusts the noise source automatically 6. Monitor the recording in real time/Hearing aid fuction 7. Voice Recorder,MP3,and Mobile HD 8. Play function: Support loop recording, A-B segment repeat function 9. Built-in high-fidelity speakers,direct external sound 10. Starting up with password to protect the files 11. Support checking the remaining recording time 12. MIC recording, 13. Built-in high-fidelity speakers, direct external sound 14. Eye free, LED backlight, Colorful TFT LCD screen 15. Support voice activated mode 16. Detect low battery and save recording files automatically 17. Support monitoring recording 18. Built in rechargeable 230mAh lithium battery 19. USB 2.0 connector, easy to upload and download files Color: Black Specification: 1. Recording Format: WAV/MP3 2. Music Playback Format: WMA/WAV/MP3/OGG etc. audio format 3. Battery Recording Time: About 25 hours 4. Battery Playing Time: About 15 hours 5. Battery: 230mAh lithium battery Battery charging time: About 3 hours 6. LCD Resolution: Dot Screen 80*160 7. USB Interface: USB 2.0 High Speed 8. Built-in Speaker: 18MM*26MM 8 Omega/1W 9. Working Temperature: 0 to 40 degree 10. Recording Sample Rate: 48KHZ 11. Headphone Jack: 3.5mm, dual track 12. Noise-signal ratio: 80db 13. Size(mm): 95*24*11 (L*W*T) Package Included: 1*voice recorder 1*English user manual 1*USB data cable