Depends how heavily you use it, but just wearing and not doing much else on it, such as when I’m at work, I can get 2 days out of it... barely, but possible. Otherwise 24 hours is easy to do.
As for the battery, it charges really fast, so I don’t see it as an issue. Drop it on the charger before you shower, brush your teeth, grab some breakfast, etc.,
and it’s back at 100% and ready for another 24 hrs+. Time you probably wouldn’t be wearing a watch anyway.