Handsfree Car Kit for iPhone 1.Long range fm transmitter 2.Charge your device ... your mobile phone through your car/home stereoCompatible with:Work for iPhone 4,iPhone 3GS,iPod nano 5th generation, iPhone 3G ... iPod models,MP3 & MP4 Players,and 3.5mm stereo connector for normal headphone Fashion Handsfree Car Kit for iPhone 4s & Blackberry