1. Product Performance: The AUX Bluetooth car adapter is crafted from zinc alloy material. It features a performance Bluetooth 5.2 chip for stable signal transmission and quick response. It enables wireless audio playback by connecting your phone to the car's audio system. Equipped with a performance isolation module, it reduces noise and current interference. 2. Main Functions: The AUX Bluetooth adapter connects your phone to the car's audio system, amplifying volume and delivering realtime navigation instructions. The car Bluetooth receiver includes a builtin microphone for hands calls and definition communication. 3. Dual Connection: This Bluetooth car adapter supports a 1to2 function, allowing simultaneous connection of two phones. It shares music from both devices and enables seamless switching between them. 4. Usage Instructions: Plug the USB power port and the 3.5mm audio jack into the corresponding ports. Turn on your phone's Bluetooth and search for devices. Select the device model 'T03' and click 'Connect.' Once connected successfully, the device is ready for use.