in 1 Transmitter and ReceiverBluetooth transmitter that supports dual stream T mode and R mode. Receiver mode Wirelessly transmit audio from your Bluetoothenabled phone, computer to your stereo, speakers or headphones. Transmitter mode wirelessly transmit audio from your nonBluetooth TV, home stereo or CD player to your Bluetooth headphones or speakers. Bluetooth version 5.0 Stable and reliable streaming with the latest Bluetooth 5.0 EDR, CSR8670 chipset, Bluetooth 5.0 chip ensures that Bluetooth audio signals are transmitted to highfidelity music streams to those speakers or home stereo systems that do not have this function. Wide Compatibility With the included 3.5mm cable and 3.5mm to 2RCA cable, this receiver transmitter adapter can be widely used on your computer, laptop, home stereo system, headphones, smartphone, Mp3 player, CD player, etc. Plug play No need to run and download APP, the Bluetooth receiver just plug it into the au port, turn on the Bluetooth on your mobile, connect and play. Easy to pair and compatible with 99.9 Bluetooth devices. Bluetooth 5.0 with an audio adapter, the data transfer speed is twice that of Bluetooth 4.2, and it can be maintained at a distance of up to 15 meters