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A Brief History Of Calculator Watches
(hackaday.com)
This is a most excellent place for technology news and articles.
I think I had the CA-50, which I thought was super cool at the time when I was in elementary school, and I wore it until sometime in high school.
I don't wear a watch much anymore, but if I did, it would probably be something like that one.
I do have a Pixel smart watch, but I only use it for payments for better CC rewards (NFC payments don't work on GrapheneOS), and I tend to take it off when I get home. By my estimates, the CC rewards (3x points, worth approx 4.5%, vs 1-3% w/ other cards) will pay for the watch in the first year even if I only use it at Costco, especially since I got a good deal on it used ($110 or so). I don't like wearing watches, but it is pretty convenient to not have to get my wallet out to pay, and my kids think it's pretty cool.