Fitbit Sense 2 Fitness Activity Tracker Smartwatch (FB521BKGB-US) Shadow Gray / Graphite Aluminum

Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Get help identifying stress and get the tools to better manage it. Learn more about your sleep and how to improve your rest with detailed nighttime tracking and a unique Sleep Profile. Track key heart-health indicators so you can make more informed wellness decisions. Plus Sense 2 is packed with advanced activity tracking and smartwatch features and includes 6 months of Fitbit Premium Membership1. Fitbit is part of the Google family.
 
Features
All-day Stress Detection
Recognize stressful events, manage them and move on with our new continuous EDA sensor on Sense 2. It helps detect stress events so you can start to see how and when your stress is triggered. Use of the cEDA sensor may affect battery life.
Stress Management Score
Get a handle on your stress. Higher score? You're showing fewer signs of stress. Lower score? Time to find better balance--try a meditation or go for a walk.
Sleep Profile
It's easier to get better sleep when you know what kind of sleeper you are. Find out whether your sleep mirrors a deep-sleep bear, a slow-to-sleep tortoise or one of our other Sleep Animals., then learn what habits best to support your profile.2
Sleep Stages & Sleep Score
Learn about the quality of your previous night's sleep with a personalized Sleep Score. With Premium, see a breakdown of time in light, deep & REM sleep to see what's impacting your rest.
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.3
High & Low Heart Rate Notifications
Your heart rate is a key indicator of health, so Sense 2 keeps you informed when it's above or below your set resting threshold.
Daily Readiness Score
Enhance yoru workout routine with a Daily Readiness score that reveals if you're ready to push or should focus on recovery.4
Active Zone Minutes
Get the results you want from every workout. Active Zone Minutes uses your heart rate to guide you toward your desired intensity level--then helps you get there.
Built-in GPS
See you 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.
40+ Exercise Modes
Sense 2 tracks more exercises than ever--like skiing, golf, stand-up paddle boarding and more--and see all your stats in real time.
Notifications
Get notifications for calls, texts, calendar events and apps like Gmail and Venmo--plus send quick replies and voice replies right from your wrist. Available when phone is nearby.
Calls From Your Wrist (Coming Soon)
Use the built-in mic and speaker to take Bluetooth calls hands-free, send callers to voicemail and adjust volume. Available when phone is nearby.
Google Maps (Coming Soon)
With Google Maps on your Fitbit watch, navigation is easier than ever. Explore a new route confidently with turn-by-turn directions on your wrist. Phone must be nearby.
Google Wallet (Coming Soon)
Tap your wrist to pay everywhere Google Pay is accepted. The quick, secure and contactless way to check out with your watch.
Built-in Voice Assistant
Use Amazn 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 your watch.5
6-month Fitbit Premium Membership
Get deeper insights and guidance, exclusive workouts, mindfulness sessions and more with the included 6-month Premium membership.1
1 New and returning Premium members only. Must activate membership within 60 days of device activation (requires valid payment). This membership cannot be gifted. Cancel before membership ends to avoid recurring fees. Content and features may change. Terms & conditions apply.
2 Requires a Fitbit Premium membership.
3 The Fitbit ECG app and irregular heart rhythm notifications are only available in select counties and with select Fitbit products; not intended for use by people under 22 years old. The irregular heart rhythm notificiations feature is not intended for use by people with known AFib.
4 Daily Readiness requires a Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only.
5 Amazn Alexa and all related marks are trademarks of Amazn.com, Inc. or its affiliates. Alexa is not available in all languages and countries. Alexa features and functionality may vary by location.
Note: Requires use of Fitbit app with compatible iPhone or Android devices. A Google account will be required.