2in1 wireless FM transmitter + car charger for ipod only Have a ipod charge connection. The product can set up the digital plays and car or home audio systems wireless link quickly and easily. It only needs to connect the FM transmitter to MP3 player or any other audio players, turn the FM radio to the cleanest FM channel 102.3 103.3 104.5 105.6 106.6 108mhz. You can njoy the digital music world. Description: Up to 10 hours of ipod music. Simple to use: Plug the FM transmitter into the headphone jack of audio-out port. Then tune your car stereo or home stereo receiver to the clearest FM. Frequency, and enjoy your digital music withgreat sound and convenience works best when you are within 30 feet of the FM transmitter, but you can still gerfood results up to 30 feer away. Also offers a fast and convenient way to enhanceyour home audio experience. Simply connect the FM transmitter to the 3.5mm onyour digital camera or video game console, and enjoy surround sound through yourhome stereo system.