【Plug and Play】Simply plug the car Bluetooth adapter into the 3.5mm AUX jack and power it via USB. This unique design ensures automatic activation upon car startup, alleviating concerns regarding battery life. Furthermore, the device seamlessly re-establishes connection with the previously paired device upon activation, courtesy of its integrated memory function. | 【Bluetooth 5.3 Technology】RIWUSI AUX Bluetooth adapter for car utilizes the latest Bluetooth 5.3 technology for a 10-meter stable connection, low latency, and improved noise cancellation. The device also features major technical breakthroughs to ensure superior sound quality even in areas with strong signal interference. | 【Hi-Fi Music & Crystal-Clear Calls】Our Bluetooth audio receiver adopts a professional HD audio decoder chip that enables you to enjoy music streaming in excellent audio quality. The CVC8.0 Noise Cancellation tech helps to eliminate echoes and block out intrusive background noise, offering you a comfortable calling experience with utmost clarity. | 【Hands-Free Calling & Dual Connection】Thanks to the high-quality built-in microphone, our Bluetooth AUX adapter allows hands-free calling (one MFB button to answer/hang up/reject/redial), ensuring safer driving. Moreover, our 3.5mm Bluetooth adapter supports connecting 2 phones simultaneously. It also enables voice assistant, you can wake up this function by long-pressing the MFB button for 2s. | 【Broad Compatibility】Equipped with the 3.5mm AUX cable, our Bluetooth audio adapter is not only suitable for car stereo systems but also for wired headphones, home bookshelf speakers, amplifiers, and more. It can also connect to your smartphone, tablet, laptop, and other Bluetooth-enabled devices. Embrace the convenience of wireless audio wherever you go.