I'm pretty much the type of smartwatch user who wants to know what time it is, and every once in a while figure out which roll of toilet paper at Costco gives me the most sheets per peso. These smart watches are expensive though, this one cost more than $15 USD, and the custom genuine leather band I had to get after the original plastic one broke was another $1.50. Battery life is OK, about two and a half years, but of course that's with all the extra stuff (i.e., the alarm chime) disabled.

I think my smart watch requirements are of a different nature from most of yours.

tanstaafl.