Bluetooth 5.0 technology: Car Bluetooth transmitter uses advanced Bluetooth 5.0 technology to provide a more stable connection, with faster transmission and lower latency. The transmission distance can reach 10m. Hands-free calling: The high-quality built-in microphone can realize hands-free calls or clear voice navigation and provide you with crystal clear call sound. This auxiliary Bluetooth adapter ensures safe driving while allowing you to talk worry-free. Plug and Play: Without battery, this Bluetooth aux adapter with a USB port for power supply. And the 3.5mm auxiliary port is for connecting non-Bluetooth devices. Direct connection, easy to use. Durable and portable: The Bluetooth car audio adapter is made of zinc alloy, which improves the durability of the 3.5mm Bluetooth adapter. With premium 0.35-1.1m TPE elastic cable, the car USB Bluetooth adapter will meet your needs in different occasions. Quick pairing and automatic reconnection: after starting the Bluetooth 5.0aux