I got excited about this product mostly because of the style. I liked the idea of having a secure-fitting headset with a microphone in close proximity to the mouth. And it worked fairly well. It was comfortable for long periods, although the headband is very small and I had to adjust it to its largest size; even then I felt that I was bending it too much. The microphone volume adjustment works well, and is handy when making different calls; some people may think you are too loud or too soft, and it is easy to adjust. The sound quality is very good on both ends.I ended up returning this product, and here's why:Used with a Motorola v197 phone, it was extremely susceptible to interference. Hold your cell phone next to a pair of regular headphones or speakers while it is being used and you will know what I'm talking about. The noise was almost constant, sometimes quieter, sometimes louder, but virtually unavoidable. It was heard on both ends of the conversation and got to be too much for me.Please note that I did not test this with a cordless land-line phone.Edit 7/12/09:This is now titled "Bluetooth." I don't know if there is a mix-up, but the one I had was NOT Bluetooth. It was wired.Also, the microphone volume adjustment was right at the end of the cord, where it plugs into your phone.