Consumer reviews of the FitBit Flex fitness tracker wristband are generally positive as of 2015. Reviews of the product are available on Amazon.com, BestBuy.com and TechRadar.com
The FitBit Flex wristband functions as an activity tracker that logs the wearer's heart rate, number of steps and calories burned throughout the day. Reviews of the product on Best Buy and Amazon.com are mostly positive, noting that the product is generally a good value and is helpful for tracking activity and fitness goals. Some reviews note slight inaccuracies in the number of steps.
Tech Radar states that the FitBit Flex is lightweight, comfortable and easy to use. The review also notes that the display screen on the wristband is sometimes difficult to understand.