Comments: Forget "where's my jetpack?", I want to know...
Have you tried using the newest iPod nano? That's a touchpad with roughly the screen area of a large watch, but I found it difficult to control. Perhaps with practice I would find it simpler, especially as I don't regularly use Apple products.
Also, you still have the best verification that I am not a robot.
I haven't, but I'm particularly looking for something that's actually wrist-mounted. And I think *isn't* primarily touchscreen, though that should be available—on something that small, for the reasons you say, I think that a lot of the interaction would have to be voice. But... the pieces are all there, technology-wise. We could have something like this as soon as next Christmas if the right person started putting it together now.