This rechargeable FM Transmitter plugs into any 3.5mm headphone jack and transmits the sound from that jack across the frequency of your choice. This device is perfect for hands free operations inside your car, home, or office. No more listening to the tiny output speaker on your Iphone or Android phone. What is neat about this updated model is that it is rechargeable, and comes with a USB charging cable. We tried one of these at our warehouse and made a video. Be sure to watch!
video of FM Transmitter for Android and IPhone 4 5 5C 5S - Rechargeable: