Hi, i know it is very premature but my 10 year old daughter says she would like a fit bit for Christmas, she is heavily into her badminton and i think she has seen a lot of the older ones she plays with, with them. Is she a bit too young? What does it really do? I am completely clueless on these and i am after a bit of advice on which one would be best suited to her. I thought she was going to ask for a phone but she has not!