Someone managed to run Windows 95 on a Samsung smartwatch. You can see it here.
I took a business trip last week which involved connecting flights to get to my destination. It was extremely helpful to have flight info come up on my LG gwatch.
I was notified of time changes and gate changes with all the flights in my route. In most cases I was notified of changes before the flight attendant or airport announcer announced the changes to the rest of the passengers.
If you travel a smart watch is a God send.