There are very affordable g-shocks with multi band, using radio signals to accurately set the time every night with an atomic clock as the source. I mean if accuracy is an issue.
The solar models also charge using sunlight and fluorescent lights but will still last about 1-2 years in darkness. Regular wear will always keep it charged.
Not to say an Apple Watch isn’t right for you. Just stating that non-smart watch options exist for those who just want to tell time, date, weekday, accurately with added stuff like alarms and stopwatch etc.