Advanced Connectivity: Experience seamless audio streaming with the latest Bluetooth 5.4 technology. This versatile device serves as both a transmitter and a receiver, ensuring high-quality wireless audio transmission. Universal Compatibility: Equipped with a 3.5mm AUX port and a TF card slot, this adapter is compatible with a wide range of audio devices, from car stereos to home , enhancing your listening experience. Interactive LED Display: Monitor your audio status conveniently with a clear, user-friendly LED display that provides essential information at a glance. Hands-Free Functionality: Integrated with a built-in microphone, this adapter supports hands-free calls, making it ideal for use while driving. Stay connected safely and effortlessly. Color: Black Material: plastic Package Contents: 1 * Bluetooth Audio Adapter 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.