Receiver (mobile terminal):
1. Bluetooth version: V5.0
2. Working frequency band: 2.402GHz-2.480GHz
3. Power level: Class II
4. Input interface, power supply mode: Type-C
5. Applicable distance: 20 meters (barrier-free)
6. Working current: less than 12mA
7. Suitable platform: mobile phone, tablet, computer PC with Type-C interface (requires adapter cable)
Transmitter (microphone terminal):
1. Bluetooth version: V5.0
2. Working frequency band: 2.402GHz-2.480GHz
3. Power level: Class II
4. Signal to noise ratio: about 90dB
5. Frequency response: 20Hz-20KHz
6. Sampling rate: 16Bit/16kHz, 16Bit/48kHz
7. Sensitivity: (-42dB? ±3dB), 1dB=1V/Pa@1kHz
8. Sound delay: less than 40ms
9. Power supply mode: built-in battery, 150mA
10. Charging interface: USB DC 5V, Type-C charging interface
11. Applicable distance: 20 meters (barrier-free)
12. Working current: less than 25mA
13. Working time: more than 6 hours
14. Directivity: omnidirectional, 360-degree radio and recording
