Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS Color:Rosewood or other USB device

or other USB device

Model Number ZA7D0021IN

Upgraded Active Track 5

Be more aware of your surroundings

brand new UI design and operation logic

Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS Color:Rosewood or other USB deviceFeatures 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