Advanced Bluetooth 5.4 Technology: Experience superior sound with latest Bluetooth 5.4 receiver, designed to minimize transmission delays and connection issues. Enjoy a seamless, stable, and enhanced audio connection that significantly reduces sound quality loss compared to older versions. User-Friendly Design: This Bluetooth receiver features an multifunction button for easy operation, including volume control and call management. Effortless Setup: Plug the adapter into your car's 3.5mm aux jack, connect the USB for power, and you're ready to go. The device pairs automatically with your phone when you your car, supporting simultaneous pairing of two devices for flexible music and call handling. Crystal Clear Sound: Equipped with advanced microphones and lossless sound technology, this car Bluetooth receiver filters out ambient noise for clearer calls. Colour:As Shown Material:Plastic Package Contents: 1 * Car 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.