The Blootooth Kit2 has the same funtionality as the original Bluetooth Kit but with support for the latest Bluetooth phones and gagets such as GPS units, radar detectors, MP3 players and the the latest generation of phones. The Bluetooth Kit2 system supports the A2DP profile (Advanced Audio Distribution Profile) which allows you to listen to devices (with the A2DP Bluetooth profile) in high quality stereo mode. Using this profile next generation devices can be controlled by voice input or by using the buttons on the Bluetooth Kit2 itself.
Check out Nolan's Bluetooth Page for functionality and device compatibility.