A4 is a Bluetooth 5.1 Receiver and Transmitter audio adapter,which it can compatible with all mobile phone or tablet,also can work on the Car,computer,tv,older version speaker etc.Whether you are studying, living or working, share audio at any time.
1, Bluetooth 5.1 Audio Adapter 2, Bluetooth Receive mode 3, Bluetooth Transmit mode 4, Support coaxial and optical input 5, Wireless reception range: ～15 m 6, Support U disk and TF card playback 7, Equipped with remote control for easy operation 8, Built-in 3.7V/800mAh battery,long standby time
