I’ve ordered one of the new Pebbles, but in the meantime, I have a PineTime: https://pine64.org/devices/pinetime

I’ve even given some to nephews and nieces because they are durable enough and so affordable that we don’t need to worry too much about them

This probably depends on what you mean by “smart”

In the old days, dumb phones were defined as devices that shipped with a set of features with users generally being unable to add new features themselves

And smart phones could be extended by users because they allow installation of apps, etc

But I don’t think this applies to smart watches: it seems like the difference here is that a smart watch goes beyond “dumb” by having phone/internet connectivity to display more than just times and dates