True fitness buffs will probably head straight for Samsung's Gear Fit smartwatch, which also does all of those things, but in a much more user-friendly way. Want to check your heart rate? Just open up the app for that and it gives you a reading within seconds.
While many people have become accustomed to wearing fitness bands either constantly or for their workouts, I think a lot of them would balk at going running with, or perpetually being tethered to, a phone as big as the S5.
It's worth mentioning too that the Fit Gear is very nicely styled. I have to admit, I wasn't a fan of Samsung's first Galaxy Gear smartwatch, because it felt heavy and clunky and was just too big for a normal-sized woman's wrist.
