Maybe you are entirely uninformed but the Sony product referenced above _did_ display notifications from a smart phone.
I bought one for $20 on one of the one day deal sites. While it had some bugs it did work. However after using it for a week, I forgot about it on it's charger for a month and then decided the whole thing was dumb.
I came to the conclusion that I don't really need notifications on my wist, I don't like a watch that has to be charged frequently, and I don't like non-waterproof watches.
Further, these days I see a watch as a man's jewelry. I wear a Seiko automatic most days. It's a little old fashioned and "Accurate enough". Maybe someday I'll get the Ball Engineer or vintage Omega Speedmaster Moon I'd like to have.