Bluetooth Car FM Modulator - Hands-free Answering Phone and Listening Music in Car Support for Bluetooth hands-free telephone answering, convenient and safe. Has CVC noise processing and wind noise suppression function, full-duplex call technology. Support two cellphone connection Bluetooth, the power supply after opening, automatically back to even and to the matching condition. Support USB / SD card MP3 format music playing. High quality A2DP streaming. With multi-function remote control, can select the number of song and choose frequency.