Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS Color:Black Exynos 9810 or above (Samsung

Exynos 9810 or above (Samsung S9

Apple designed driver delivers high-fidelity playback with ultra-low distortion across the entire audible range

Curved Adhesive Mount

Varies with use and other factors

activity duration

Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS Color:Black Exynos 9810 or above (SamsungFeatures Active Zone Minutes alert you when you're in your personalised Fat Burn, Cardio or Peak heart rate zones After outdoor workouts, see a workout intensity map in the app that shows your heart rate changes along your route Use built in GPS to see your pace and distance on screen during outdoor runs, cycles, hikes and more Track sleep stages & review your in app Sleep Score for an easy way to see how well you slept Multi day battery lasts up to 7