Based on appearance and its predecessor, the Fitbit Flex. The new Fitbit Flex 2 takes the basic activity and sleep tracking and basic interface from the Fitbit Flex, adds the styling of the Fitbit Alta and makes this love child waterproof to 5 ATM (50 metres). The even better news, based on the blog post, is that they have updated the tracking algorithms to support swim tracking automatically swimming along with the number of laps and estimated calorie burn.
As with the Fitbit Alta, the Fitbit Flex 2 strap will be replaceable with a number of different colour and material options.
One thing to remember about the Fitbit ecosystem is that the service automatically detects switching between devices meaning that you can use the Fitbit Flex 2 when you hit the pool and switch back to another Fitbit tracker out of the pool.
We can’t wait to get our hands on one and let you know how it performs.tracking