The Griffin iTrip Auto FM Transmitter utilizes FM technology with its in-built charger that hooks your iPhone directly into your car’s accessory socket, be it a custom-made socket or simply a cigarette lighter. Once you have connected the iTrip, simply press the SmartScan button that will search for the clearest radio frequency for your needs, then tune your radio in to that channel.
You can assign bespoke presets that allow you to tune directly into the frequency near your house without searching for a new station each time you leave the house and you can also toggle between stereo and mono play modes. If you are going on long journeys, it can be a good idea to switch from station to station by using the SmartScan button, as the frequency can get confused with local radio stations; just be sure to pull over to the side of the road when you are tuning the radio!
To get started with your Griffin iTrip, simply purchase one at any Apple shop or online, then download the free Griffin iTrip Controller App from the iTunes Store, then enjoy the rest of your journeys in musical bliss!
Link: Griffin iTrip Auto FM Transmitter
For more recommendations on useful car accessories, have a look at 10 Best iPhone And iPod Car Accessories.