bluetooth handsfree car fm transmitter with dual USB car chargers

1. Transmit phone call & audio via bluetooth from cell phone to the car FM stereo (STEREO A2DP).
2. Dual USB output to charge external devices totally (DC 5V/3.4A).
3. A special remote can be fixed on dash board to control the unit from multiple directions.
4. Switch to Hands-free mode automatically from music playing status when receiving calls.
5. A built-in Microphone can adopt voice perfectly when hands-free.
6. With LED display shows the Voltage of the auto battery, fm frequency, Volume and etc.
7. Full 206 channels optional from 87.5-108.0MHz
8. ABS coating with metallic colors