I absolutely love my Fitbit Flex activity & sleep wristband. I was interested in losing a few pounds and getting a good nights sleep. It is excellent in helping you track calories in vs calories out, your activities through out the day, and your activity. My battery was defective and had to be replaced. During the short period I was without my tracker I was somewhat at a loss. The flex customer service was great at getting it replaced as quickly as possible. You will totally get hooked, like me, if you use it. It will become a permanent part of your daily life.
M. M.