The Wirecutter's best deals: Save $70 on an Apple Watch Series 2
Other wearable picks include the Garmin Forerunner 230 and Fitbit Flex 2.
Fitbit says that Flex 2 didn't explode on its own
'External forces caused the damage to the device,' a spokesperson says.
A Fitbit Flex 2 reportedly exploded on woman's arm
Fitbit is 'actively investigating' the claim.
Fitbit's new Charge and Flex track every type of workout
The updated fitness bands look better than before, but they're not very exciting.