1. Material: ABS, metal, electronic components
2. Channel: 2
3. Noise ratio: 94dB
4. Frequency response range: 20Hz-20KHz
5. Sound card Bluetooth version: V5.0, compatible with 4.2
6. Built-in battery: 1200mAh lithium battery (the microphone in the set does not have a battery)
7. Charging time: about 2.5 hours
8. Charging current: about 600mA
9. Charging voltage: DC5V
10. Reverberation processing: 32Bit RISC processor Up to 288MHz
11. Sampling rate quantization: 44.1KHz/16Bit