Purchased one of these recently with expectations of it being a handy tool.
Boy was I surprised! Even with the VR3 speaker volume turned down low the person on the other end of the conversation receives feed back in the form of an echo of their own voice. The VR3 speaker has to be turned down so low to keep from feeding back through the microphone, it makes it just about worthless to try to use.  The ROADMASTER VRT200V bluetooth hand free cell phone car kit is simply a joke.  One of my poorest purchases :-(   

Now, at this time I want to make it clear to all that I am not complaining about the eBay member I purchased this item from. The seller was top notch with me.