If you want truly standalone + WiFi + custom code, check SQFMI Watchy (ESP32). You can flash your own firmware, call HTTPS endpoints, parse JSON, and render custom UI without a phone in the loop.
Main tradeoff: it’s very DIY (power management, UX polish, tooling). If you want less DIY, Wear OS gives a better SDK, but the platform lock-in is much stronger.
https://watchy.sqfmi.com :)
If you self assemble take great care with the buttons! Otherwise a great reliable device. Bought myself one as "reward". But broke the left lower push button. On board contact still works so it's usable. ESP so comes with wifi&BT goodness built in.
does the newer revision have USBC? I cant find a clear answer in the docs
microUSB is kind of dealbreaker (feels a bit nitpicky and minor, but i just dont have any micro cables anymore)