... Player&Iphone 4S Product features: 1. Plugs into the 3.5 mm headphone jack of any portable audio player 2. ... range: 87.9MHz ~ 107.9MHz,0.1MHz/step 5. Memorizes the last frequency 6. Supply power to FM ... 7. CE,FCC & RoHS approvel Compatible with: All iPod models,iPhone,iPhone 3G,iPhone 3GS ,iphone 4S ... has a 3.5mm audio socket. Bitmap Hot Seller FM Transmitter for all Player device of an 3.5 mm audio ...