Nothing but a fad. Looks cool, but you always have to have your headset by your side (or stuck in your ear). I use a headset in the car, but I would really hate to always have to have it on me. And what if you forget to charge your headset? Then I guess your watch phone would ring, but you cannot pick up the call. Also, I have a really nice Omega watch and I would not be able to wear it if I have this James Bond thingy.