In the Matt Damon sci-fi flick Elysium, the wealthy have smart watches not unlike
's. Perhaps there is one use to the smart watch. When you're at a party, as many know, you'd probably be checking your phone every 10-20 minutes or more at a time. If there's an emergency, the smart watch is perfect for that type of alert.
Now that I think about it more without digressing too much, (I may expand on this in another thread) we could be moving towards phablets replacing tablets and smart watches replacing phones.

Now that I think about it more without digressing too much, (I may expand on this in another thread) we could be moving towards phablets replacing tablets and smart watches replacing phones.