Package Contents: 1x FM Transmitter with car charger (phone is not included) / 1x User"s Manual. Operating Instructions Insert the car charger into the car"s cigarette lighter. Keep the FM transmitter and car"s FM radio at the same frequency. The operation of the above will also allows provides hands-free talking through your car speakers. (only can be used when 3.5mm audio connected) Use the micro 5pin connector and audio 3.5mm to connect the device. Now you can enjoy your digital music with full sound and convenience. The operation of the above will also allows provides hands-free talking through your car speakers. (only can be used when 3.5mm audio connected)