They have some heart-rate and some health tracking an as others have mentioned, so many of the more fringe features are way less useful than a watch that lasts anywhere from a week to a month on a charge versus a daybor two with the ultra
And then, I dunno. We've clearly made this trade-off before with mobile phones. As much as I like the Nokia I had that went weeks without a charge, I also rarely notice the charging time of my phone.
Lately I've been thinking about a mode in which a "smartwatch" serves as a fitness tracker, heads-up display, and wallet, while a real, mechanical watch, which never runs out of battery, becomes the timepiece (and fashion piece?)