Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, One Size (S & L Bands…

With Fitbit Charge 4, there’s no limit to how far you can go. This sleek, swimproof tracker is packed with features that help you know your workouts and your body better—like built-in GPS, Active Zone Minutes, new exercise modes and sleep tracking. Plus, up to 7-day battery, you get more convenience on the go and more inspiration to reach your fitness goals. I Water resistant to 50M; Battery up to 5 hours with GPS—varies with use and other factors.

Use 24/7 heart rate to track resting heart rate & better measure calorie burn
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
Get call, text and smartphone app notifications on your wrist. Plus, send quick replies to texts (Android only). Available when your phone is nearby
Multi-day battery lasts up to 7 days and up to 5 hours when using built-in GPS. Varies with use & other factors