Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS Color:Black TriPort acoustic architecture and Bose

TriPort acoustic architecture and Bose innovations like Volume optimized Active EQ add depth and clarity to your music while maintaining balance at any volume

The glossy and skin-friendly ceramic back ensures a comfortable wearing

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

Curved Adhesive Mount

With content curated for you

Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS Color:Black TriPort acoustic architecture and BoseFeatures 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