Just purchased a pair of Oakley ORokr Sunglasses. These things rock. Charged them up, paired with my Treo in about 30 seconds and there it was streaming music from the treo, phone calls in and out perfectly and voice command as well!
Did lots of research and found nothing that said these would work with a Treo 700wx (actually was told it would not work for the music stream) but perfect and stereo as well.
Pretty pricey wireless but livin in Hawaii you need the shades and they are great.