Jensen Advanced Bluetooth HandsFree A2DP Music Player Kit with Caller ID Only a 3 wire installation! A2DP Enabled Bluetooth For Wireless Digital Music From Your Phone To Your Car Stereo, Caller ID Displays On Remote Control. Automatically Switches From Music To Calls And Back. Answer, Reject Hang-up And Adjust The Volume From The Remote Display/Controller Full duplex communications guarantees great sound with cutting-edge noise suppression and echo cancellation technology for crisp clear calls every time. Supports voice dialing and voice commands if your phone supports these features Bluetooth Version 2.0 + EDR Technology mean great connections and extended battery life on your phone over Bluetooth Version 1.0 devices. Compatible with iPhone.