1.【Wide compatibility】：Compatible with most smart phones and Bluetooth electronic products, it is an ideal choice for your home or car audio system, very suitable for home or car audio systems. 2.【Easy to use】：Easy to carry, elbow design, the audio plug of this wireless music adapter connects to the port of your car/home audio system, not taking up space. 3.【Hands-free call】：The built-in microphone helps you to make a hands-free call. With the one-button function, you can answer the phone hands-free while driving. Make sure you drive safely. 4.【Bluetooth 5.0 technology】：The connection is stable, the transmission speed is fast, and the signal range is large. Low power consumption, high rate and stable signal transmission, the Bluetooth receiver using Bluetooth 5.0 technology can not only provide a faster and more stable connection, but also ensure high-quality sound. 5.【Dual mode】：The Bluetooth transmission mode (TX) converts wired audio into a Bluetooth signal and transmits it to the Bluetooth device for output. Bluetooth receiving mode (RX), receiving Bluetooth signal, and transmitting to wired audio through Bluetooth connection.