Description
- Battery Life: Up to 7 days
- Compatibility: Compatible with iOS 12.2 or higher & Android OS 7.0 or higher
- Built-in GPS: With built-in GPS, leave your phone behind and explore the outdoors with pace and distance on your tracker and see a workout intensity map showing your route and effort in the app when you’re done
- Active Zone Minutes: This feature alerts you to which heart rate zone you’re in so you can see if you’re working hard enough to reach your goals
- Sleep Stages & Score: Charge 4 tracks your time in light, deep and REM sleep stages and gives you a nightly Sleep Score in the Fitbit app, so you can better understand your sleep quality and work toward better rest
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