FitBit Charge 3 Sport Band Navy Small

The Fitbit Charge 4 (released 2020) and Charge 3 (released 2019) share nearly identical designs, dimensions, and interchangeable bands, including the Small Navy Sport Band, allowing for direct accessory compatibility. The primary upgrade in the Charge 4 is built-in GPS for independent tracking, along with Spotify control and Active Zone Minutes. Both are water-resistant up to 50 meters and feature similar, largely monochrome displays.