Griffin GA15005 RoadTrip HandsFree -Complete car solution for iPod & iPhone. Mount, charge, play your iPod & iPhone, make handsfree calls from your smartphone. Live in a house divided? Listen to your music on an iPod but use a smart phone? Then RoadTrip HandsFree is the total music/handsfree calling solution for you. Cradle: Flexible neck and adjustable mount for your iPod or iPhone. Charge: Case-compatible dock charges whenever you"re docked. Play Music: Send music to your car stereo via FM transmitter. Call Handsfree: Bluetooth connects your smartphone to place and answer calls through your car"s sound system. RoadTrip uses a powerful FM transmitter to send the music wirelessly to your car"s FM radio, so you and the whole car can enjoy it through your stereo speakers. And while you"re enjoying the music, your iPod or iPhone is enjoying a battery charge.When a call comes in on your iPhone or smartphone, RoadTrip becomes a handsfree speakerphone in your car. RoadTrip"s high-sensitivity built-in microphone picks up your voice, and your caller"s voice plays through your stereo speakers. RoadTrip"s handsfree phone features work with iPhone and other Bluetooth-enabled phones.