1. One-key recording, arbitrarily switching between voice control and normal modes 2. Built-in noise reduction chip, high fidelity and clearer recording and playback sound quality 3. Built-in chip, after synchronizing time with the computer, the recording time is synchronized with Beijing time, which is convenient for arranging 4. File encryption protection, you can add a password to the recording file to protect your data security 5. Stereo sound capture technology long-distance high-definition, according to the environment on site, the recording distance is about 60 meters, and the recording is as you hear it 6. Support Android mobile phone OTG connection, the mobile phone can play recordings, preview and delete recordings at any time, there is no need to connect to a computer 7. The recording is automatically divided and saved, and the recording will be automatically saved as a unit file every 5 hours for easy reference, summary and classification 8. Sampling rate: 48khz 9. Number of bits: 192kbps 10. Recording format: Wav 11. Music format: MP3, WMA, WAV 12. Product size: 39 x 30.5 x 6mm 13. Product weight: 10g