1.Wirelessly transmits phone call & music to the car FM stereo system

2.Switch to Hands-free mode from music playing status when receiving calls automatically  

3.With Dual USB  output 5V/2.1A + 1.0A ; Input 12-24V

4.Support U disk (up to 64 GB)      

5.Digital LED screen display the numbers

6.Detects the voltage of car battery 

7.Bluetooth Chip:  V5.0 Support A2DP, AVRCP,HFP