1. Echo cancellation and noise processing during a call
2. Bluetooth and FM stereo transmission technology
3.support USB / TF card / audio head / Bluetooth connection
5.support MP3 music format
6. automatic power memory function
7.Cigarette lighter power supply: DC12V-24V power supply;
8.FM transmission frequency: 87.5 ~ 108Mhz
9.Voltage detection.
10.USB1 output: 5V / 3.1A; USB2 output: 5V / 1.0A
11.Bluetooth sound processing: A2DP (Advanced Audio Distribution Profile
12.Bluetooth transmission distance: 10M
13.Bluetooth microphone effective range: 0.5-2M