“Fitbit Flex 2: The waterproof tracker is smaller, lighter, and better looking than the old Flex but it’s still got a few issues.” Swimming and automatic activity tracking requires extra ...

Going back to our troubleshooting, here are the things you need to do if your Fitbit Flex 2 won’t sync properly… Restart your Flex 2 first as the system might just need refreshing.

If you don't want a big watch-style tracker on your wrist the Flex 2 is a good alternative, and it can even be worn on your hip or around your neck.

The Flex wristband by Fitbit, released in May, is the latest personal fitness tracker to bring some aspects of the quantified self movement to the general public.

Source: Fitbit Dina Mitchell - a Wisconsis woman - was wearing her Fitbit Flex 2 while sitting down and doing nothing else more than reading a book when the device caught fire and exploded.