[3 MODE PLAY MUSIC] The FM transmitter for car, support 3 mode to play music,U disk play mode and TF Card play mode and bluetooth play mode. | [HANDS-FREE CALL] Bluetooth FM transmitter for car adapter,on bluetooth mode when phone ring click knob button to answer / click again hang up / double click to call you last called number, keep you driver safe. | [3 PORT CHARGING] The FM transmitter support 3 device charging,one 18W type-c PD port quick charging and one USB 3.1A port and one USB 1A port.Built-in over-current protection, over-voltage protection, short circuit protection, effectively prevents multiple problems | [7 LIGHT COLOR] 7 background light mode,click light lable button to cycle switch bluetooth transmitter adapter light mode. | [5 EQ MODE] 5 EQ mode, click EQ button to cycle switch the transmitter EQ mode. | [Station Range 87.5 to 108] Radio station range 87.5 to 108 ,Select a blank channel of car station And set product station as your car station (long press fucntion knob untill station number flash then rotate knob to set station)