Fitbit Flex 2 explodes and injures wearer's wrist - is Fitbit approaching its Note 7 moment?

If there's a battery in it, it could explode. No one's immune to mishaps like this – even users of Fitbit's seemingly harmless wrist bands. Wisconsin resident Dina Mitchell had her Fitbit Flex 2 blow up on her wrist while she was reading a book. Mitchell was treated for second-degree burns as the wearable partially melted on her wrist, leaving a small volume of rubber and plastic for doctors to remove. She had the device for two weeks.

Fitbit got in touch with Ms. Mitchell and offered a replacement device, in addition to investigating the issue. The company is adamant ...