Features:
1. Support FM full-band transmitter 87.5-108.0MHZ
2. Support dot matrix display 1.4 inches
3. Support U disk function
4 support TF card function
5: Bluetooth answer, hang up, reject, redial the phone and other functions
6: support Bluetooth stereo music player
7: Talkback echo cancellation and noise suppression (CVC) technology
8: Support dual USB output voltage, power supply to other devices