Bluetooth Handsfree Calling with Noise Canceling Mic: Safely answer and make phone calls while driving. Quickly redial last call. * FM Transmitter with RDS: Wireless audio solution for every vehicle. FM radios with RDS will also display artist and title information. * USB charger: Charge your Smartphone. * Free Grooveshark Anywhere 3 Month Subscription. Bring over 15 million songs to your car"s FM stereo without monthly fees.