Don't have a Bluetooth radio in your car and can't play music, YouTube or mp3 from your phone? No problem. Just turn on this converter and you're done. How does it work? 1. Plug this device into a power source - either via USB to a power bank or preferably directly into the 12V ignition in your vehicle. 2. Simply pair your iPhone or Android phone/tablet via Bluetooth with this device. 3. This device will show you the FM frequency which you can then tune into in your car on your radio/amplifier 4. Done, your phone is connected via Bluetooth and FM signal to your car and you can play songs on your tablet for your children or yourself, Spotify/YouTube, etc. as you are used to. Other advantages include the ability to control volume and answer calls on the physical button of this remote. An SD card with your own songs can be inserted on the side.