Saflyse Universal Wireless Bluetooth Fm Transmitter Car Mp3 Player Car Bluetooth Receiver Fm Radio Stereo Handsfree Car Kit with Mic Double 5v2a USB Charging Port for Iphone 6 6plus 5s 5 4s 4 Ipod Ipad Samsung Galaxy S6 S6edge S5 S4 S3 Note 3 2 HTC One M8 Sony Xperia Motorala Nokia All Bluetooth Smartphones - Black Compatible with your smartphones, tablets or MP3 players through Bluetooth. Besides, during the bluetooth connecting, play the phones music and FM transmitter to Car Audio, perfect ,as the calls incoming automatically switches to the speaker state, call end then automatically back the music player. So you do not do any modifications, easily enjoying the music and handsfree phone calls while you are driving. Full frequency range from 87.5 to 108Mhz, can satisfy your need and preference for different frequency channels. Wirelessly transmit phone call and music from Bluetooth mobile phone to the car FM stereo system. Adapting professional-grade high-performance bluetooth module ,built-in mp3/wma decoder chip make it capable of playing the music files in u disk,firing into the car stereo via wireless.