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To turn it off Push in the Button until you hear it buzz or it stops.
I would do several restarts
http://help.fitbit.com/articles/en_US/Help_article/1186/?q=restart&l=en_US&fs=Search&pn=1
If that doesn't help
Contact Support
http://help.fitbit.com/?cu=1
Wendy | CA | Moto G6 Android
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