A:Answer Hello,
As per FitBit:
All Fitbit trackers are water-resistant, which means they are rain-proof and splash-proof and can stand up to even the sweatiest workout. Do not swim or shower with your tracker unless noted below:
The Fitbit Flex 2 is swim and shower proof.
The Fitbit Alta is shower proof.
Whenever you get your tracker wet, dry it thoroughly before putting it back on.