Product Review
For the item manual/usage in English please refer to this link - https://desk-fitbit.s3.amazonaws.com/Fitbit%20Zip%20Product%20Manual%20-%20English.pdf
For the item manual/usage in English please refer to this link - https://desk-fitbit.s3.amazonaws.com/Fitbit%20Zip%20Product%20Manual%20-%20English.pdf