Wireless interface for CS06300 and CS0SB72 stereos. This adapter plugs into the CD changer port of your stereo and gives you the ability to do hands free calling from your bluetooth capable phone. Also listen to music stored on your A2DP enabled bluetooth device. If you have a CD changer, you can still use it with the adapter plugged in (there is a CD changer port on the control box). Main control box has a 1.5' cord that goes to radio CD port, 6.5' cord to answer button and 3.5' cord from answer button to microphone.