HighlightsEDA detection & stress management, Heart rhythm assessment with ECG app*, High & low heart rate notifications, On-wrist skin temperature sensor & SpO2 levels Take Bluetooth calls, get text & app notoficationsBattery lasts 6+ days plus, fast charging gives you a full day charge in just 12 minutes.** *The Fitbit ECG app is only available in select countries; not intended for use by people under 22 years old.See fitbit.com/us/technology/ecg for additional details.**Varies with use and other factors; up to 5 hours with continuous GPS.With Call FunctionTouchscreenFitness & Outdoor