Car Wireless Adapter Bluetooth Music Receiver,Kartice Car Charger With FM Transmitter Bluetooth Adapter Hands-free AUX Cable Car Charger Fm Radio Stereo Adapter Music or call switching, free and relaxed. Super clear and flow conversation effect.Deliver fluently your favorite music, GPS voice navigation. Simple and Easy Wireless Set-Up, Automatically connect, if you need the cell phone connect the receiver automatically, just turn on the Bluetooth of the cell phone first, and then turn on the Bluetooth receiver FM TRANSMITTER: It has five different optional appointed frequencies 88.1M, 88.5M, 96.7 M, 107.5M, 107.9M. When tuning your car FM frequency to the same frequency as HK109 FM appointed frequency, you can enjoy music or answer phone calls through your car audio system. WIRELESS BLUETOOTH RECEIVER FOR 3.5MM JACK:if your car has aux input, you can plug audio cable into 3.5mm jack, then you can answer phone call and play your phone music through car audio system of wireless bluetooth receiver for car 5V 2A BLUETOOTH CAR CHARGER OUTPUT:this aux to bluetooth receiver provides power to phone, pad, laptop and so on;3500hAm battery can be fully charged in 3 hours(without music and phone calling)