B56 Lavalier Design Bluetooth 5.0 Wireless Microphone

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