After receiving my order,it took me 5 minutes to pair and connect to my Car's FM. Just pushed in the car's charging port,the display showed the frequency 87.7. Just pressed the channel 6 of my FM car radio and moved the knob to fibd 87.7 and long pressed the channel 6 button. It got saved. Opened the mobile phone blue tooth and searched for near by devices, found X5 and paired it. That's all and i was playing the music from the play list. In the mean time got an incoming call and the music was disrupted by ringing bell. Took the call ,good clarity of sound during call. Hung up and music started again. THUMBS UP. Hope i have made a right choice because reading reviews before purchasing was not very encouraging. Go for it.