3.5mm USB Bluetooth 5.1 Audio Stereo AUX Wireless Receiver Adapter Built-in Mic
Receiver AUX Mode 1x 3.5mm Aux Cable. The USB mode does not need to use 3.5 audio cables. Note: The car usb interface and speaker usb interface must support usb audio output. 1x Bluetooth 5.1 Audio Receiver Adapter.