1. Noise reduction: Supported 2. Sound delay: ≤25ms 3. Microphone: -38dB±3dB 4. Frequency response: 20Hz-20 KHZ 5. Sampling rate: 44.1KHz 6. Signal to noise ratio: ≥70dB 7. Working current: ≤12mA 8. Shutdown current: ≤20uA 9. Battery life: 6H (including battery compartment) 10. Operating temperature: -10℃-50℃