Daily Readiness 
Optimize your workout routine with a Daily Readiness Score that reveals if you're ready to exercise or should focus on recovery.1 

EDA Scan App 
The on-wrist EDA Scan app detects electrodermal activity--which may indicate your body's response to stress so you can better track and manage it. 

Fitbit ECG App & Irregular Heart Rhythm Notifications 
There are two ways to uncover AFib, right at your fingertips. With the ECG app, you can take an assessment on demand. Plus, use irregular heart rhythm notifications to look for signs of AFib while you're still or sleeping.2 

On-wrist Skin Temperature Sensor 
Sense logs your skin temperature each night to show how it varies from your personal baseline, so you can be aware of trends over time.3 

Understand Your SpO2 Levels 
See your nightly blood oxygen levels at a glance with our growing collection of SpO2 clock faces. Then use the Fitbit app to track your trends over time in the Health Metrics dashboard to see when there may be indications of important changes in your fitness and wellness. 

6-month Fitbit Premium Included 
Personalized health & fitness guidance with a 6-month Fitbit Premium membership for new Premium users.4 

High & Low Heart Rate Notifications 
Your heart rate is a key indicator of health, so stay informed when Sense detects that your heart rate is unusually high or low. 

Built-in Voice Assistant 
Use Google Assistant or Amazon Alexa Built-in to get quick news and weather, set bedtime reminders and alarms, control your smart home devices and more--just by speaking to yoru watch.5 

Calls from Your Wrist 
Use the built-in mic and speaker to take Bluetooth calls hands-free, send callers to voicemail and adjust volume. (Available when your phone is nearby. Requires more frequent charging.) 

6+ Day Battery Life 
Get 6+ days of battery life without stopping to charge, along with fast charging--fuel for a full day in just 12 minutes. 6 

1 Daily Readiness requires a Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only. 

2 The Fitbit ECG app and irregular heart rhythm notifications are only available in select countries and with select Fitbit products; not intended for use by people under 22 years old. The irregular heart rhythm notifications feature is not intended for use by people with known AFib. 

3 Skin temperature variation not available in all markets. Only available in the Fitbit app and only displays variation. Significant changes in ambient temperature may negatively impact skin temperature tracking. 

4 New and returning Premium members only. Must activate trial within 60-days of device activation (requires valid payment). This trial cannot be gifted. Cancel before end of trial to avoid recurring fees. Content and features may change. Terms & conditions apply. 

5 Voice assistant availability and features may vary. 

6 Varies with use and other factors; up to 12 hours with continuous GPS. Get 24 hours of charge with 12 minutes of charging.