There is a mode where you can "train" various activities. One of them is climbing stairs. I assume that if you have done this training mode a few times, the band should recognise when you climb stairs in the future and indicate this as an activity. However, I have never tested the function and therefore do not know if it works.
No it does not measure.I am otherwise very satisfied with the band.It is relatively simple,but has everything I expect from a Fit Tracker at the Presi.