I have had expensive pedometers and cheap ones also. This one is on the expensive end and is less accurate than the [...] Wal mart version. It will jump from 0 to 60 steps while I am holding it and just looking at it and then when I am looking to see how many steps I happened to go in a particular part of my workout it doesn't register those steps at all. Also after working out with it to step routines for two weeks it has yet to register any aerobic steps at all. I like the fact that it records steps for 7 days but if they are completely wrong there is no value there.