I have the feeling I am going to pass on so called smart watches.
I had a digital watch back in the 70s when they were way cool but in time learned the value of a watch with hands - read with the shortest glance and just think, the display is on all the time and battery life is counted in years.
I have heard suggestions that a smart watch would tell you when you have messages on your phone - but my phone manages that just fine with sound or vibration (as set and circumstance).
Data entry is not a practical proposition - without hooking up via yet another cable to a PC.
I just cant see it.