This plus the first few Google search results tell me it's not going to work without an iPhone.
This is why I do not buy into the Apple ecosystem, even if individual elements are superior to competitors. I do not want to be completely constricted to one ecosystem. My world involves Microsoft, Google, Steam, Epic, Blizzard, Logitech, Fossil, Asus, HP, Lenovo, etc. and I will continue to swap in and out components as desired.
But I am sad that WearOS options are generally so terrible (at least in performance and features, though some of the physical designs are much better than anything else). And a little jealous of the happy M1-based Macbook users with their battery life!
Ah to dream of having your cake and eating it, too. But we each must choose our own collection of compromises!
You can get all this functionality and more working beautifully with Android with Garmin watches. Mine lasts for many days on a charge (perhaps a week without activity tracking), has better sport tracking features, but the screen isn't quite as good. There are currently a few good deals on the Vivoactive 3, but also many higher end models available too.
I use a Vivoactive 3, and the battery definitely doesn't last days if I actually use it to track a specific exercise. I'm quite unimpressed with the battery life, but the watch is fairly feature-rich, otherwise.
If I just wear it without running anything, then yes, it can last days. But if all I want is to track heart rate, sleep, and such, I can get that with a much cheaper watch.
