I’ve been using a Steel HR for a few years now. I’m extremely satisfied.
Long battery life is an understatement! Even when the battery drops to near 0 the watch is still useable as a plain analog watch for at least a week giving me enough time to find where I left the damn charger (given that I don’t get to use it often at all).
What I don’t get is how this model (analog watch with just enough smarts) hasn’t gained more traction. It seems to me there’s a lot of opportunities in this space, not everything requires a high resolution display.