[throwaway888abc]

Check Garmin, rock solid

https://buy.garmin.com/en-US/US/c10002-p1.html

EDIT: for CSV/analytics - there is numerous open source tools available + connect portal/app

https://medium.com/@azholud/analysis-and-visualization-of-ac...

[curmudgeon22]

I second Garmin. My wife has a Apple Watch, battery lasts most of a day. My Garmin venu lasts ~5 days.

[odai4real]

Awesome. This gives me a starting point. Thank you for the suggestion!