I have PineTime setup with the heart rate tracker and always-on screen, the battery lasts all day if I charge it every night. In the latest update you can set the heart rate tracker to only poll every 1/5/10/30min if you’re concerned about the power. The always-on screen uses much more power than the heart rate tracker.

Like Matrix?

I assume you mean having a USB-C port on the side of the watch. Having that port would allow water to get in to the case, the cradle-style charges used by smart watches allow the case to be sealed to prevent water damage. Even if you are careful about not wearing the watch when bathing, or in the rain, or in a pool, its unlikely you remove you watch every time you wash your hands or wash dishes.

Does anyone other than Trump want these names changed? Alaska spent decades trying to get the name changed to Denali.