Fitbit Product Experts Alumni are retired members of the Fitbit Product Expert Program. Learn more
The calories are probably correct as it tracks the calories you burn just keeping your body alive even when you are not wearing it (see http://help.fitbit.com/articles/en_US/Help_article/1381 for more details).
The steps should be zero though if you were not wearing it. Were you carrying it such that random movement might have generated steps, e.g. in luggage? If you want to remove these steps then this article will explain how: https://help.fitbit.com/articles/en_US/Help_article/1306/
Best Answer