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. Use the 3.5mm Audio Plug and micro 5pin 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 conversations through your car speakers.