Hello, I have had mine since the end of September, in October we bought another one for another family member. In the beginning, my battery ran out quickly (I had to recharge it every 2 days - only one device was affected, the other one was fine), but this has now been fixed via a software/firmware upgrade and now lasts +/- 1 week with constant use, GPS on. Otherwise, there is nothing to complain about from my point of view, we are satisfied with both devices, no defects, nothing annoying.

I have had mine since the beginning of October. It works perfectly. It's the best Fitbit I've had.

My daughter uses the device regularly and so far she has had nothing to complain about.