1.All kits car fm transmitter 2.For Blackberry & iPhone4 2.Handsfree ... and provides 2. Hands-free conversations through your car speakers 3. Charges your device while it plays ... release your BlackBerry press the Cradle Lock Release buttonCompatible with: Work for Blackberry, iPhone4, iPhone 3GS,iPod ... nano 5th generation, iPhone 3G,iPhone,all iPod models,MP3 & MP4 Players,and 3.5mm ...