Just plug LightrFM into your car's cigarette lighter socket - this is what powers it.
It doesn't drain your battery
It then allows your phone to find LightrFM in your phones Bluetooth settings. Once connected, every time you start your car, it will automatically connect.
Next, tune your car's stereo/radio to the exact same station that is displayed on LightrFM LED screen (this station is adjustable too).
LightrFM will then stream any audio off your phone straight through your car speakers.
Spotify playlists, audiobooks, phone calls and MORE!