I am interested in these too. I assume it won't be long for a driver to make these work with 770, especially since Nokia announced several months ago information on a release of their own Bluetooth Stereo earbuds to compliment the 8800/01 phones.

How good is the microphone? Can people hear you well? I know that previous microphones have been developed to pick up your voice through your ear, but they were usually placed inside the ear, not over it. You don't stick anything in your ear do you? It is just like normal headphones, right?

How is battery life?