I would not purchase one for the same reason that I will not buy a cell phone (with all the bells and whistles) - They are way too expensive, I have no reason to have one. I don't want one and it never fails - when someone buys one or the other, they always complain about it! I don't worry about when I sleep restless, and I don't have a purse that makes weird noises or something that sticks out of my ear. I have a pedometer and snap it onto my jeans. That tells me how many steps I take per day - What more do I need. I don't mean to sound like a grouch or a curmudgeon, but if God had wanted us to have all this stuff to attach to our bodies, He would have made us robots. Edie