"Average at best"2.0 starson by sseavers
Pros: The size is great. Small and compact.
Cons: It loses its accuracy within a few and it doesn't tack sleep properly.
Summary: The one is my second Fitbit.
i had the ultra and it had to be replaced, because it went rogue on me. The tracking just failed all together. The ultra was a complete failure. FITBIT replaced the ultra with the one and I was excited when I received it. I thought the silicone sleeve was a nice added feature, because it was to help protect it from sweat. 1: within the first week it recorded I slept 16 hours, ridiculous. #2: i would walk on totally flat ground, no inclines and it reflected I walked numerous flights of stairs. This occurs all the time. And #3: the silcone sleeve is now stretching out, so I have to remove it with care when it needs charging. I check it constanly for fear it will slip out of the silcone sleeve and not be there.