How do you like the garmin? I keep thinking about getting a (dumb) smart watch that can track HR and basics like that but I am always worried about the battery life and having to remember to charge it.

The ForeRunner series has been great, it gives me notifications and also tracks all the activity stuff, and I have to charge it every 5-6 days (unless I do big GPS activities and then have charge more often obvi). Limited in function but does that function well.