Play music from your iPod or iPhone wirelessly on your FM car stereo Auto Scan function automatically finds the next clear frequency Take hands free calls over your car stereo from your iPhone via 3.5mm socket Professional unidirectional built-in microphone provides superior feedback rejection during calls Control your iPod or iPhone & answer calls easily using buttons on main unit Transmission range up to 10 metres Works on full FM frequency range of 87.6107.9 M Hz