Fitbit Flex: http://help.fitbit.com/articles/en_US/Help_article/About-the-Fitbit-Flex http://help.fitbit.com/articles/en_US/Help_article/About-the... While it

Fitbit Flex: http://help.fitbit.com/articles/en_US/Help_article/About-the-Fitbit-Flex http://help.fitbit.com/articles/en_US/Help_article/About-the... While it is water resistant and can be submerged up to 10 meters, Flex is not designed to track swimming activities. If you want to better reflect your swimming activity and calories burned, we recommend logging the activity on the Activities page of your dashboard. There are similar "About" pages for the other Fitbit trackers that you can get to easily from the page above. Most say something like this: Your Charge is water-resistant. It is rain and splash proof and can stand up to the sweatiest workout. Remove before showering or swimming.