A handful of months ago I looked into these as well as Amazon knockoffs.
Just couldn't figure out a use case for me that justified the cost.
If my temp is elevated...OK, good to know?
If it says I need sleep...OK, we'll then I am probably going to sleep soon anyways.
If it meaningfully tracked daily activity, fat%, calories in and out, etc- yeah that's be a data monitor with value to me.
But I kept coming back to the view that its just a really slick energy monitor(sleep tracker).