1. Product name: Bluetooth Audio receiver
2. Bluetooth version: 5.1
3. Connection range: 15m
4. Frequency response range: 10Hz-20KHz
5. Battery capacity: 200mAh
6. SNR: less than 110dB
7. (TX) Transmission mode: Transmission mode TV computer transmits audio to Bluetooth headset or Bluetooth speaker,
8. (RX) Receiving mode: In receiving mode, you need to plug in the audio cable to connect the wired speaker or wired earphone. In receiving mode, you need to connect the bluetooth of the mobile phone