This is cheap but not a great bargain. I installed the adapter and the software (v2), which turns out to be limited in functionality, and a pop-up appears asking if you want to upgrade the software to v6, which i wanted to do to gain all the functions. Clicking this takes you to the bluesoliel website, who want to charge 20 euros to upgrade the drivers. This is totally unacceptable.
The supplied software itself is limited, and will not function with the sony ericsson pc suite or the remote control feature on my sony c702. The product is advertised as supporting A2DP music streaming but this option was 'greyed out' in their software, even though my phone supports it. I uninstalled the drivers and let it function with just the windows vista drivers, which gives me the functionality i wanted except A2DP.
My advice is to stay well clear of this and purchase something else.