Use built-in GPS to see your pace and distance on screen during outdoor runs, rides, hikes and more and see a workout intensity map in the app that shows your heart rate changes along your route.

With Active Zone Minutes, feel a buzz when you reach your target heart rate zones during exercise, and celebrate when you earn extra minutes outside of exercise. Operating temperature: -20° to 60° C.

Use 24x7 heart rate to track resting heart rate & better measure calorie burn. Syncing to mobile devices requires Bluetooth LE and internet connection. Syncs with Mac OS X 12.2 and up, iPhone 5S and later, iPad 5 gen. and later, Android 7.0 and later
See your SpO2 nightly average and range on wrist, and view trends over the past week in the Fitbit app (SpO2 is not available in all markets. The SpO2 feature is not intended to diagnose or treat any medical condition or for any other medical purpose)
Track your skin temperature each night to see how it varies from your personal baseline (Not available in all markets. Only available in the Fitbit app and only displays variation. Not intended for medical purposes).

Track workouts in real-time with 20+ goal-based exercise modes. It's also swimproof and water resistant to 50 Meters, so you can track swims, wear in the shower and more

Multi-day battery lasts up to 7 days and up to 5 hours when using built-in GPS (varies with use & other factors). Track sleep stages & review your in-app Sleep Score for an easy way to see how well you slept


* Touchscreen
* 24/7 Heart rate
* All day calorie burn
* Sleep tracking
* Up to 7-day battery life
* Swim-proof
* Female Health tracking

Wireless Sync
Fitbit Charge 4 can automatically sync to 200+ Android, iOS & Windows devices to show your stats, trends, and progress on your Fitbit dashboard. Windows compatibility coming soon.

Fitbit Pay
Load your favorite cards to your Wallet in the Fitbit app, then use Charge 4 to make easy, secure payments on the go. Only available on special editions.

Smartphone Notifications
Stay connected with call and calendar alerts, text notifications and quick replies, plus notifications from smartphone apps. Available when your phone is nearby, quick replies coming soon to Android only.

What's included:
Fitbit Charge 4
Classic wristbands (both small & large)
Charging cable

What's included in special edition Charge 4:
Fitbit Charge 4
Woven or Sports wristbands (both small & large)
Classic wristbands (both small & large)
Charging cable
NFC chip for Fitbit Pay

Memory
Saves 7 days of detailed motion data - minute by minute
Saves daily totals for past 30 days
Stores heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times



Both small and large bands included in the box.

Large fits wrists 7.1" - 8.7" in circumference.

Small fits wrists 5.5" - 7.1" in circumference.