BT-21 NFC Bluetooth 5.0 Receiver & Transmitter RCA 3.5mm AUX Audio Ada

1. Product interface: RCA interface / AUX audio interface
2. Bluetooth version: Bluetooth 5.0
3. Connection range: 15m
4. Battery capacity: 200mAh
5. Work length: receive 8h / transmit 5h
6. Frequency range: 10Hz-20HKz
7. Signal-to-noise ratio: less than 110dB
8. Product features: Bluetooth receiving / transmitting function combination
9. Package: 1*Bluetooth adapter,1*Charging cable,1*Audio cable