Operating system - Android
Memory storage capacity - 32 GB
Special feature - Heart Rate Monitor, Temperature Tracker, Stress Tracking, ECG, Fall Detection
Battery capacity - 300
Connectivity technology - Wi-Fi
Wireless communication standard - Infrared
Battery cell composition - Lithium Ion
GPS - Built-in GPS
Shape - Round
Screen size - 41 Millimeters


New sensors for heart rate tracking, skin temperature and stress management.2 And a 100% recycled light aluminum housing that's more comfortable.1
An all-new sensor and Google AI combine for Fitbit's most spot-on heart rate tracking yet.1 So that you can get more precise health and fitness info.2
With Fitbit's body-response feature, get help identifying potential signs of stress, so that you can manage it in the moment.1
A built-in sensor tracks temperature variations that may be related to your sleep environment, menstrual cycle or changes in your wellness.1,2
Use the ECG app to assess your heart rhythm or get irregular heart rhythm notifications in the Fitbit app.1,2
Fall detection is designed to help connect you to emergency services if you've had a hard fall, even auto-dialing if you're unresponsive.1
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