PineTime.
It doesn’t do very much, but the things it doesn’t do aren’t things I’m all that interested in anyway. What it does do, it’s kinda hit and miss. But it is cheap as hell for a smartwatch and fully open source, so were I more inclined to code I could potentially improve some of the ways it does things.
Yep. Add in shipping to the US, and it’s still less than $40.