Feature 1 FM transmitter 2 LED display window 3 LINE audio input 4 Independent bluetooth start shutdown button 5 Support playing music by USB drive6 Support MP3 WMA music format 7 Answer hang up reject redial via bluetooth 8 bluetooth stereo music play 9 Call Echo Cancellation and Noise Reduction CVC 10 Power other devices up to 5V 2A 11 Automatic memory function of power failure frequency point 12 Display of on board battery voltage Specification ModeliM M1ColorGold Silver Rosebluetooth VersionBT V2 1 EDR bluetooth ProfileA2DP bluetooth Range10 meters Microphone Effective Distance0 5 meter 2 metersMusic PlayingMP3 WMA SNR60dB FM Frequency87 5 108 MhzFM ModeStereo digital PLL frequency lockingPower SourceCar lighterRated Working VoltageDC 12V 24VUSB Power Output5V 2A Working Temperature0 50℃Package included 1 X Car FM Transmitter1 X AUX Audio Cable1 X User Manual