Upgrade Wireless Bluetooth 5.4 Transmitter Receiver Audio 3.5mm Jack

AUX audio cable connection, everything is so simple. 5.4 Bluetooth version, fast connection, no delay, no stalling. 1 Bluetooth Adapter. Wireless protocol: AVRCP, A2DP, HFP. The latest chip is equipped with a small and powerful function, supporting the function of transmitting and receiving in one.