This Bluetooth receiver and transmitter allows you to use our comms systems wirelessly and receive a wireless signal on wired headphones. For example, using this kit you can use Airpods with your Baofeng mic output or play wireless music into your electronic hearing protection. The transmitter/receiver is rechargeable and includes all the cables to do so. Note: This device cannot transmit and receive at the same time. It cannot be used with our 3.5mm cable as a microphone and allow wireless listening at the same time as the 3.5mm cable requires an external mic to work. However, it would work perfectly fine with our Baofeng shoulder mics as these have a microphone and output build into them.