There is no unwanted background noise AT ALL which was a very nice surprise even when the volume is really high.
The package comes with some nice helpful bits and pieces to keep the setup neat and tidy.
The response time from pushing a button to the action happening on your phone is pretty much instant.
I use this in my 2010 Mazda 3 which doesn't have built in Bluetooth. And this device completely transforms my car to be Bluetooth capable. It turns on when I turn on the car because it's plugged in to the USB power. Device connections are almost instant and completely seamless. I don't even have to think about it.
The device is sleek and small and it back-lit with LED lights. It makes a little BEEP sound when it connects to phone.
Absolutely INSANE value and quality for a really decent price and I got it the next day after ordering in NSW Australia.
PS. I'm very picky about how my sound systems perform. I don't like anything that sounds less than amazing. This product definitely pumps out the good stuff and I'm very happy with the performance.