Fitbit Charge 4 (NFC) - Advanced Fitness Tracker with GPS, Swim Tracking & Up To 7 Day Battery Black

Highlights

• 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 days and up to 5 hours when using built-in GPS. Varies with use & other factors.
• Use 24/7 heart rate to track resting heart rate & better measure calorie burn.