I was frustrated that the Bluetooth interface in my vehicle did not work with my Blackberry. This device works wonderfully and as promised. A praise: The book was great to specifically list the link process for my phone. Two items of concern; I could not find any information about the microphone that came with the device, and the speaker is a little tinny. It's a simple tradeoff for small compact size. I not only wanted it for my car use, but wanted to be able to use it for a speakerphone in impromptu meetings where advanced planning was not possible. It works great for that.