Use your car stereo's AUX port to listen to your iPod or listen and talk handsfree on your iPhone while you charge its battery. To charge, set your iPhone or iPod in TuneFlex's adjustable cradle. We've designed the cradle so that you can leave your iPhone or iPod in its case. TuneFlex's flexible steel neck adjusts to keeps your iPhone or iPod just where you want it, always within reach but never in the way. For great-sounding tunes, plug into your car stereo's AUX port with the included AUX/Mic cable. When a call comes in, just tap your iPhone to answer. The call audio plays through your car's speakers, and the cable's high-sensitivity microphone picks up your voice, loud and clear. Meanwhile, you can keep your hands on the wheel and your attention on the road.