Wireless 12V bluetooth and MP3 FM modulator BF-805 is designed as a special bluetooth FM transmitter.
Play MP3 via SD card or USB on your Radio. Simply plug into the car lighter and tune your Radio to 85.5.
When a call comes in or out, it will automatically change to phone dialog. After call ends, it returns to play music.
It lets you to drive more safe, more comfortably.