Car Dock for iPhone Handsfree Bluetooth/Built in FM Transmitter/iPhone Charger/Play music content through the speakers of the vehicle/Windscreen and Dash Mount/Use Apps Safely/Comes with free App Handsfree calls via the microphone of the car dock and the car speakers Music via car speakers, either by AUX connection or FM transmitter (both included) Windscreen or dash mount (both included) Charging of iPhone via the 12V (cigar lighter) socket Compatible with iPhone 4, iPhone 3GS and iPhone 3G