Fitbit Ace 2The Ace 2 is also more durable than the original. For starters, it's waterproof up to 50 meters (the Ace which was only water resistant), so kids can take it for a swim. And the band doubles as a protective bumper to shield from scratches on the tracker's display.
Fitbit Alta HRThe Alta HR has a slim and stylish design with 7-day battery life, and all-day fitness and heart rate tracking. The Fitbit Alta is a robust, stylish, slimline tracker that covered everyday activity and casual exercise slickly and accurately.
Fitbit Blazeif you're new to the world of fitness trackers, or you're upgrading from a first-generation device, the Blaze is a solid choice. It's an accurate and reliable tracker, and the color screen is great for displaying the useful new FitStar workouts. If you're willing to spend $200, it's well worth considering.
Fitbit Charge 2The Charge 2 retains a very Fitbit-esque look. Taking cues from its predecessor, as well as the Fitbit Alta and a little from Surge, it's actually much sleeker than the others, with a larger black and white OLED screen that's four times bigger than on the old Charge devices.
Fitbit Flex 2The Fitbit Flex 2 is a great fit for those who want to track their steps, exercise and sleep without wearing a bulky device or plasticky band. Its water resistance means you don't have to take it off every day, and stylish accessories make this device among the more attractive fitness trackers around.
Fitbit Versa LiteThis watch is water resistant up to 50 meters, but it's not specifically designed for the pool as it doesn't feature swim tracking. The durability in water is more for when you're out running in the rain or you accidentally submerge your wrist.
Fitbit ZipThe Fitbit activity tracker family includes the tiny Zip, which you wear on your waistband or in your pocket rather than on your wrist. A big advantage of the Fitbit Zip is that it uses a replaceable battery that lasts for months.