Fitbit has really failed its customers. Soooooo many owners are experiencing product failure just beyond the 365 day warranty period. Fitbit just says 'thanks for letting us know. We invite you to buy another one.' No corporate responsibility whatsoever.
As a former Ionic owner I would never buy one of their products again. I am not the only one who feels like this. Frustrated ex-owners think this is such a huge scam. Either products made to fail, or just not fit for purpose. Just check out all of the complaints on their Fitbit community forum.