Hi
I just got a new Vivofit 4 yesterday through a Veteran's program. They gave it to me to help me monitor my health and get healthier. I'm wondering how accurate these things are? I've never had any type of health monitor before.
Also, it told me that I had almost 4 hours of deep sleep and when I looked it up, that seems to be way more than normal so I'm wondering if the thing is maybe not that accurate for things like sleep. I really just don't know how it works and want to know more. Help me out?