Advanced Bluetooth 5.4 Technology: Experience superior sound quality with our Bluetooth 5.4 audio receiver, designed to deliver a stable and seamless wireless connection. Universal Compatibility: Easily connect this USB dongle to any car audio system using the 3.5mm jack. It's perfect for turning your car's audio system into a wireless sound powerhouse. Built-in Microphone: Make hands-free calls or voice assistants with the integrated microphone, ensuring safety and convenience while driving. Compact and Portable: This and portable audio adapter is ideal for on-the-go use, easily fitting into any car without taking up space. Color: As Shown Material: TPE+aluminum alloy Package Contents: 1 x Bluetooth 5.4 Audio Receiver 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.