Creazy&reg; BT-303 Car Kit MP3 Bluetooth Player FM Transmitter Modulator SD USB Remote Bluetooth hands-free talking and FM radio functions High quality sound with D.S.P solution for echo cancellation and noise suppression Automatically converting between calling and music playing, also last memory You can directly control MP3 player by the button for picking up / hanging on or change FM Supports micro SD / SD card / USB for playing music