Bluetooth car charger, Car FM Transmitter

Product specification:
1. Full frequency FM transmitter
2. Digital display
3. Supports line audio input
4. With power off switch (USB direct connect)
5. Support U disk TF card player
6. Support MP3 format music
7. Bluetooth answer, hang up, reject, redial calls and other functions
8. Bluetooth stereo music play
9. Echo cancellation and nosie
10. Suppression(CVC) techonology a call
11. Support USB output voltage, the maximum output 5V/2.1A
12. Automatic power-off memory function