12-in-1 bidirectional mode & wide compatibility Experience ultimate flexibility with both Transmitter and Receiver modes. Easily convert your wired headphones or car stereo into a wireless Bluetooth device, or stream audio from non-Bluetooth TVs and projectors to your In Bluetooth audio devices. Works seamlessly with TVs, Cars, Headphones, Speakers, PC, iOS, and more. 2Latest Bluetooth 5.3 Technology Enjoy a superior wireless experience powered by Bluetooth 5.3, ensuring a more stable connection, lower latency for perfect audio-video sync, and extended range. Experience crystal clear hands-free calling with built-in microphone for safer conversations in the car. 3Plug and Play & Portable Design No drivers or complicated setup needed! Simply plug the 3.5mm AUX jack into your device, power it on, and connect. Its compact and portable design makes it the perfect wireless audio adapter for car, home stereo, travel, and even airplanes. 4High definition sound quality & multi scene applicatio