1:ALL car kit for iphone&ipod 2:CE,FCC,ROHS approvel 3:factory direct marketing 4:199 frequencies 5.quickly scan frequency All ... suing knob in back of the dock and and the flexible neck7. Use the up/down frequency selector,to the right ... your mobile phone through your car/home stereoCompatible with:Work for iPhone 3GS,iphone 4,iPod nano 5th generation, iPhone 3G,iPhone,all ...