Certain Fitbit smartwatches potentially pose a safety risk. Google states that two of its wearables can overheat, which can lead to injuries. Fortunately, the issue can supposedly be solved via a new software update.https://www.notebookcheck.net/Overheating-Fitbit-smartwatches-can-cause-injuries-Google-offers-update-and-50-compensation-for-affected-users.950860.0.html
After updating the firmware on my 3 year old Sense, the battery life indicator stopped working. It has said 100% since last night. Typically, I normally drop from between 10 and 20% overnight. Unless they've magically find a way to have eternal battery life, they did something wrong with the firmware update.
Interesting. Since I have had to contact FITBIT about a sense 2 that exploded ( there was a loud pop/ sharp burn/ flash of light/ watch face shattered) on my wrist as i was sleeping.
After going through their protocols/ talking to some r& d person/ sending photos of watch and burn/ they sent me a a replacement sense 2