The original Fitbit Flex has been around since 2013. It is a simple, reasonably small fitness tracker, not terribly expensive and not jam-packed with features.
The Fitbit Flex 2, which arrived in late 2016, keeps that style, while adding more customization and full swim-ready water resistance (a first for Fitbit), all crammed into a smaller band.
But not everything has been improved, with battery life proving a particular disappointment, and in the three years since the original Fitbit Flex a number of rivals have emerged – including some from Fitbit itself, so is the Fitbit Flex 2 enough of an update?
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