ZD42B Magnetic Sound Control Smart Noise Reduction Voice Recorder 1. Surround stereo microphone, 360-degree panoramic sound pickup 2. DSP intelligent noise reduction, 1536K lossless recording 3. Built-in strong magnet, can be easily adsorbed on the surface of iron objects 4. Support voice-activated recording, automatic voice recognition, efficient and convenient 5. One-click power-on recording, automatic saving when shut down 6. Built-in 400mAh lithium battery, 500 hours of long-term battery life (32GB), 180 days of standby 7. Support multi-APP voice recording, can be connected to mobile phones, tablets, mixers 8. Built-in 16GB32GB flash memory chip, also supports 128GB memory expansion 9. Display: 0.96-inch color screen 10. Recording format: WAV 11. Recording sampling rate: 16243248KHz 12. Recording bit rate: MP3 32128192Kbps, WAV 51210241536Kbps 13. Playback format: MP3, WAV, WMA, APE, FLAC, etc. 14. Built-in Mic: Omnidirectional condenser microphone 15. Distortion: greater than 70dB 16. Signal-to-noise ratio: 0.05% 17. Dimensions: 100x49.6x18mm 18. Net weight: 119g