I am not sure how useful these really are. I guess it is more discrete to see a text message pop on your watch instead of your phone in a meeting, but otherwise unless this replaces a phone, what's the point? Not to mention that with bluetooth enabled, your phone battery is going to drain faster.
The only advantage I can see is if you have one of those honking-huge smart phones that you don't want to pull out and peak at when you get a text or need to know the time.
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