Fitbit lawsuit claims most of its trackers and watches are burn hazards

About two months ago, Fitbit started recalling its first true smartwatch, the Ionic, due to overheating batteries that caused 78 reported injuries in the U.S., including a handful of second and third-degree burns. But a new lawsuit alleges many more people have been hurt using other Fitbit trackers and smartwatches that suffer the same defect and are capable of causing skin burns.