Specifications:

iFM is a radio receiver that allows you to listen to FM radio through your iPhone or iPod. iFM works with Griffin's free downloadable iFM Controller software to provide an interactive FM radio tuner through the Multi-Touch display of your iPhone or iPod touch. Other iPod devices control iFM through their familiar Click Wheel and buttons. Use iFM Controller to tune in your favorite stations and to save and recall presets. It's the intuitive hassle-free way to play FM stereo on your iPhone or iPod. Compatible with iPhone 3GS iPhone 3G iPod touch (2nd generation and later) iPod nano iPod classic iPod with video"