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I believe the only difference between small and large is the wrist band size. When I bought mine, the Best Buy Rep measured my wrist and said I needed the small. No functional differences.
Sorry, there was a problem. Please try again later.The length of the wristband...not the face of the fitbit.
Sorry, there was a problem. Please try again later.that is the wrist size. I am a female and have smaller wrists so purchased a Small. Large is probably the most common size for both Men and Women. But you could need a large or xtra large. If you go to a store they will let you try it on first for the correct size.
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