1. Wireless transmiter phone call & audio playing to the car FM stereo system via BT.
2. Switch to Hands-free mode automatically from music playing staus when receiving phone call.
3. Built-in Microphone.
4. Supprt music playing from USB Disk.
5. Detect and display the voltage of car battery when power on.
6. Dual USB charging Ports: QC 3.0+ 5V/1A.
7. Intelligent power-off memory function.
