B800LI Clip-on HD Noise Reduction Recording Pen, Support TF Card & One-key Recording & OTG, Capacity:16GB 1. Independent recording button, one-key recording, one-key saving, prevent misuse, adapt to various environments 2. 384kbps recording, clear and natural, reducing distortion 3. Switch between voice control and normal mode 4. Approximately 60 meters recording distance, you can record when you hear it 5. Digital encryption technology makes recording more secure 6. Back clip design, easy to carry 7. Support Android mobile phone OTG connection, mobile phone can play recording, view upload management files at any time (available only for Android phones) 8. Recording format: WAV 9. Sampling rate: 16KHz 10. Recording method: one-key recording 11. Music format: WAV, WMA, MP3 12. USB connection: Mini USB 13. Battery capacity: about 110mAh 14. Product size: 6.5 x 3.2 x 1.7cm 15. Product weight: about 60g