Have a look at this. https://pine64eu.com/product/pinetime-smartwatch-sealed/
You can see the specs and get the idea of what you might need
I use it on my home server, TUI only, when I want to organise my files
Have a look at this.
https://pine64eu.com/product/pinetime-smartwatch-sealed/
You can see the specs and get the idea of what you might need