2 in 1 Bluetooth AUX Adapter: Receive and transmit functions meet all your Bluetooth needs. (TX) In Bluetooth Transmitter Mode: The Bluetooth Transmitter transmits TV/Airplane/PC audio to Bluetooth headsets. (RX) In Bluetooth Receiver Mode: The Bluetooth Audio Receiver streams music from Bluetooth devices to your home stereo/car stereo system. High Fidelity Stereo: The Bluetooth adapter for stereo receivers is equipped with the latest wireless codec for high fidelity sound quality performance and provides consistent and clear wireless audio streaming with virtually no delay or loss of sound quality. Car Bluetooth Auxiliary Adapter: This car Bluetooth adapter has a built-in microphone, intelligent noise reduction and digital signal processing, allowing you to answer or hang up calls with just a click. Plug the aux Bluetooth adapter into the car auxiliary port, and the phone connects to the Bluetooth adapter, allowing your phone to through the car speakers. Best Travel Companion: The Airplane Bluetooth Adapter mini and compact design allows you to carry it without adding any burden. The built-in battery can be used for up to 15 hours, using this Bluetooth adapter to enjoy your favorite wireless content all the time. Bluetooth 5.4 Stable Connection: The Bluetooth car adapter leverages the power of Bluetooth 5.4 technology to a more stable and faster connection. Wide Compatibility: The Bluetooth transmitter receiver is compatible with 3.5mm interface devices such as airplanes, , car audio, home audio, headphones, audio music streaming systems, sound systems, speakers, gym equipment, PC, MP3 and other devices. Colour:Photo Color Material:ABS Package Contents: 1x Bluetooth audio transceiver 1x charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.