It has a USB slot for charging your phone / iPod, which also connects your device to your stereo for hands free calling. (autolist.com)
Bluetooth facility allows occupants to make hands free calls, and to use their devices for audio streaming. (cardekho.com)
Completely sweat proof and complete with hands free calling, the system even lets you adjust everything you need (including volume and song skipping) entirely hands free. (geekwrapped.com)