All I can say is WOW. This unit is amazing. When I opened the package, I saw a ton of wires and I got scared. However, these wires only have a few actual connections (mic, speaker, display device) and then all connect to the main brain. It was so simple to install. I am glad I did it myself. The quality is excellent, the voice prompts are easy and intuitive. The accuracy of reading your voice and your numbers is awesome. I love this thing. Safety was my big issue. Well worth the $200 off of Ebay. I highly recommend this Bluetooth Device.

Derek