Fitbit was at the forefront of the fitness-tracker boom, but one thing it never managed to crack was waterproofing. That’s all changed with the Fitbit Flex 2, a device that can track the number of lengths you’ve swum in a pool along with all the usual fitness-tracking metrics including your steps and sleep, your walks, runs, bike rides, gym sessions and more. The Flex 2 also estimates calories burned based on your age, height and sex, provides an educated guess at the distance you’ve walked or run, and helps you track the food you eat and your water intake. The great thing about the Flex 2 is that is keeps tabs on all of this completely automatically. The only catch is that you have to have indulged in that activity for at least 15 minutes before the Flex 2 will log it as such.
The design of the Flex 2 is similar to the previous version, but with some practical embellishments. The tracker itself is a tiny plastic lozenge, adorned with fire status LEDs used to indicate charge status and notifications. It has a vibrating motor inside to remind you to get up and move about, wake you up silently in the morning and notify you of incoming text messages and phone calls.
We found the fitness tracker comfortable to wear and it feels far more robust than the old Fitbit Flex, with a clasp that engages more firmly and securely.
Small niggles aside, we like the Fitbit Flex 2. It works well, it’s waterproof and it tracks everything, including swimming, for a reasonable price. The only things missing are hear-rate monitoring and a barometric pressure sensor, which would allow it to count how many flights of steps you’ve climbed.