Add Bluetooth to your aux devices - LOKUKA USB to 3.5mm Bluetooth aux car audio adapter is easy to use. Connect it to the Aux port of your car stereo, speaker, amplifier, headphone, or any other audio device, and connect the USB port to a USB charging jack to power the Bluetooth. Then, turn on the phone's Bluetooth and connect the "YP04". The green light flashes quickly when it's USB-powered and turns into a slow flash when the Bluetooth "YP04" connects successfully. LOKUKA aux Bluetooth adapter for car supports music, hands-free calls, voice navigation, etc. Bluetooth 5.3, Stable Connection - This Bluetooth receiver for cars uses Bluetooth 5.3 technology, which offers a stable connection and no latency or lag. You can enjoy uninterrupted music streaming without any stuttering or buffering with this 3.5mm Bluetooth receiver. The built-in antenna design can realize 0-10 miles of long-distance transmissions. 1-to-2 Dual Connection - This car Bluetooth receiver has a 1-to-2 feature that allows you to connect two phones simultaneously, making it easier to share music and switch between two devices. It also has an automatic reconnection feature, ensuring that it automatically connects to your phone when you return to your car. Drive Safer with Hands-Free Calls - Enjoy hands-free phone calls, voice navigation, or phone music directly through your car's speakers with the built-in microphone of the LOKUKA Bluetooth to aux adapter. Stay focused on the road and make every journey a safe one! Plug USB for Power, No Recharging Needed - This LOKUKA Bluetooth Car Adapter is a plug-and-play solution. Simply connect it to your car's 3.5mm aux jack and power it via USB—no need for battery recharges! It automatically turns on or off each time you start or shut off the car.Note:USB male port for power supply to enable Bluetooth functionality Durable Design - With a 3.5mm audio output and high-fidelity transmission via enameled copper wire cores, this wireless Bluetooth car kit delivers high-quality sound with no noise or current sound, ensuring that you enjoy a crystal-clear audio experience. Also supports mobile phone music and call functions, with car echo cancellation. Its compact and portable design makes it perfect for travel, and the zinc alloy casing ensures that it's durable and long-lasting. LOKUKA Customer Support - Our 24-hour customer support will solve almost all issues for you. We aim to provide better Bluetooth audio adapter cables and a purchase experience for our customers. Just enjoy with LOKUKA products! Warm Tip 1 - Please notice that the USB port is only for active Bluetooth (NOT for transferring audio as an aux cord), and the microphone is built into the USB port. Warm Tip 2 - If you use this aux to Bluetooth adapter on an ISO phone when using the mic, we advise that you set the type of device in your phone as "Speaker". Warm Tip 3 - The green light flashes quickly when it's USB-powered and turns into a slow flash when the Bluetooth "YP04" connects successfully. LOKUKA Bluetooth aux adapter for car supports headphones, speakers, and audio transmissions. The material of this aux Bluetooth adapter for car is Zinc alloy casing with nylon braided wire. The audio interface of this auxiliary Bluetooth adapter for a car is a 3.5mm headphone jack. The audio decoding rate of this Bluetooth aux receiver is 48KHz/16bit. And this Bluetooth aux adapter for car name is "YP04".