Wireless FM transmitter 1.wireless docking FM transmitter 2.full range FM frequency Features:Dock FM transmitter transfers iphone/ipod audio to your car's audio system wirelesslyUsing means:1..Attach the transmitter to iphone or ipod and turn on your car radio and select an unused FM frequency(88.1-108MHZ)2.Select the same frequency on the transmitter and enjoy your playlist hands-free from your ...