As I write, it's at 37% with 6 days left of charge. And it charges 0 to 100% in around 2 hours.
I used to use a fancy Movado / Android Wear watch that without word of a lie could die before 8pm on almost minimal use. It was an absolutely redundant item to own.
I charge my fenix 7 solar maybe once a month. My use case is about 10 hours a week of activity tracking, usually trail runs. This goes up to about 20 hours a week in the summer but i dont recharge much more often. I use garmin pay and occasionally listen to podcasts on my watch while running. I also use the on-watch maps quite a bit on my trail runs.
For anything else, smartwatches are simply too awkward and small for any real use. Better just to spend a second or two to get your phone out.