It is a wireless activity tracker. The one I have, the fitbit flex, is worn on your wrist 24/7 and tracks your steps, miles, calories burned, that sort of thing. Certain models, like mine, track your sleep as well (duration, how many times you woke up, etc) and can even wake you up in the morning with gentle vibrations!

It is great for seeing how active you are on a day to day basis and challenging you to push just a little harder to meet your goals!




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