• Optimize your workout routine with a Daily Readiness Score that reveals if you’re ready to exercise or should focus on recovery (requires Fitbit Premium membership)
• Get a daily Stress Management Score showing your body’s response to stress and take steps to improve your levels with an on-wrist EDA sensor mindfulness session
• Keep track of your heart health with high & low heart rate notifications and a compatible ECG app that assesses your heart for atrial fibrillation—a heart rhythm irregularity—and share the results with your doctor (coming soon)1
• With the Health Metrics dashboard, track SpO2—the level of oxygen in your blood—plus heart rate variability, skin temperature variation and more to keep tabs on your well-being2
• See your real-time pace & distance without your phone using built-in GPS during outdoor activity, then see a map of your workout route in the Fitbit app
• Includes a 6-month Premium membership complete with personalized insights, advanced analytics, guided programs, mindfulness & sleep tools, workouts and more3
• Your stats come to life on a new color touchscreen that’s two times brighter than Charge 4 in daylight, all with up to 7-day battery (varies with use and other factors)
• Track calorie burn and optimize workouts with 24/7 heart rate tracking and Active Zone Minutes, which guide you toward your desired intensity level
• Get a better understanding of your sleep quality with a daily Sleep Score and graphs of your time in light, deep and REM sleep—then see how you can improve your sleep and wake up feeling energized
• Use the 20 exercise modes to set personal goals for runs, rides, strength training and more, then get real-time stats to help you keep the pace or maintain your target heart rate zone 
• Water resistant to 50m

Requires use of Fitbit app with compatible iPhone or Android devices. A Google account will be required.

DIsclaimers:
1 The Fitbit ECG app will be available soon on Charge 5 in select countries. Not intended for use by people under 22 years old. See https://offerup.com/redirect/?o=Zml0Yml0LmNvbS9lY2c= for additional details.
2 The Health Metrics dashboard and the metrics displayed in the dashboard are not available in all countries. This feature is not intended to diagnose or treat any medical condition and should not be relied on for any medical purposes. It is intended to provide information that can help you manage your well-being. If you have any concerns about your health, please talk to a healthcare provider. The SpO2 feature requires more frequent charging. 
3 New and returning Premium users only.