Since my Opel Astra Sports Tourer has no speakerphone I bought this retrofit kit. I have the receiver / microphone installed to the left of the sun visor. The installation and setup is done very easily and in less than 5 minutes. Here it is always some noise present when the AUX port is enabled. Does the mobile phone via Bluetooth music from a phone or running but is this noise away and the sound quality is good. What bothers me is this not because I stream music from my phone permanently yet I find a star deduction for this justified. For the price, however, the product is unbeatable and I would always buy me back and the call quality is good.
