Specifications
Touch ScreenYesOperating System CompatibilityAndroid, Apple iOSApp CompatibleYesGlobal PositioningGPS, GLONASSMetrics MeasuredActivity vs. inactivity, Altitude changes, Blood oxygen, Respiration rate, Cadence, Calories burned, Distance swam, Distance traveled, Duration of exercise, Electrocardiography (ECG), Hours slept, Laps swam, Pace, Route, Duration of sleep stages, Running/Walking speed, Steps taken, Skin temperature, GlucoseWater ResistantYes
Key Specs
Touch ScreenYesOperating System CompatibilityAndroid, Apple iOSApp CompatibleYesGlobal PositioningGPS, GLONASSMetrics MeasuredActivity vs. inactivity, Altitude changes, Blood oxygen, Respiration rate, Cadence, Calories burned, Distance swam, Distance traveled, Duration of exercise, Electrocardiography (ECG), Hours slept, Laps swam, Pace, Route, Duration of sleep stages, Running/Walking speed, Steps taken, Skin temperature, GlucoseWater ResistantYesMaximum Depth of Water Resistance164 feetBand MaterialSiliconeSeriesSense 2
General
Product NameSense 2 Advanced Health SmartwatchBrandFitbitProduct TypeSmartwatchForm FactorWristwatchModel FamilyFitbit Sense 2Model NumberFB521BKGB-USSeriesSense 2ColorGraphiteColor CategoryBlack
Design
Case ShapeRounded squareBand TypeInfinityBand ColorShadow GreyClasp TypeOther
Display
Display ScreenYesTouch ScreenYesDisplay TypeAMOLEDColor DisplayYesClock DisplayYesBacklit DisplayYesAdjustable BrightnessYesCustomizable Watch FacesYes
Compatibility
Operating System CompatibilityAndroid, Apple iOSApp CompatibleYesVoice Assistant Built-inAmazon Alexa
Connectivity
Data Plan RequiredNoBluetooth EnabledYesNFC TechnologyYesWi-Fi CompatibilityNone
Features
GPS EnabledYesGlobal PositioningGPS, GLONASSMobile NotificationsYesAlert TypeVibration, VisualSilent AlarmYesVibration AlertYesBuilt-In MicrophoneYes
Activity
Metrics MeasuredActivity vs. inactivity, Altitude changes, Blood oxygen, Respiration rate, Cadence, Calories burned, Distance swam, Distance traveled, Duration of exercise, Electrocardiography (ECG), Hours slept, Laps swam, Pace, Route, Duration of sleep stages, Running/Walking speed, Steps taken, Skin temperature, GlucoseMulti-Sport TrackingYesSensorsAccelerometer, Altimeter, Ambient light sensor, Electrical heart rate (ECG) sensor, Optical heart rate (PPG) sensor, Pulse oximeter (Sp02) sensor, Temperature sensorNumber of Sensors7
Performance
Water ResistantYesMaximum Depth of Water Resistance164 feetDust ResistantYesMinimum Operating Temperature-14 degrees fahrenheitMaximum Operating Temperature113 degrees fahrenheit
Dimensions
Product Depth0.44 inches
Power
RechargeableYesCharging Interface(s)USBBattery TypeLithium-polymerReplaceable BatteryNo
Material
Band MaterialSiliconeCase MaterialAluminum
Dimension
SizeAdjustableMinimum Wrist Size139.7 millimetersMaximum Wrist Size220.98 millimetersBand SizeAdjustableProduct Width1.59 inchesProduct Length9.79 inches
Warranty
Manufacturer's Warranty - Parts1 year limitedManufacturer's Warranty - Labor1 year limited
Other
UPC810073611429
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.
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
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
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. Available on Android only, Coming Spring 2023 to iOS.)
Google Wallet
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 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 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 Amazon Alexa and all related marks are trademarks of Amazon.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.
What's Included
Fitbit Sense 2
Infinity Band (Small & Large)
Charging Cable
Search
- A: AnswerI think the bands are the same. I ordered a dressy band from amazon that was advertised as compatible with all the following models: sense 2/sense/fitbit versa 4/versa 3. The band did fit on my sense 2 when it arrived. Just a pro tip though: the sense 2 is a downgrade from the Sense 1, so if your sense 1 is still functioning, I would not shell out 300 bucks for the sense 2.
Answered by Ashley9
Q: QuestionDoes this watch detect irregular heart beats or afib?(3 answers)
A: AnswerI have Atrial Fibrillation, which is mostly controlled with medicine. This watch will let your phone know when you had it at night. Also, when you are in it, you can detect it with the ECG app.Answered by FrankieW
Q: QuestionDo this fitbit have a telephone number ? M(2 answers)
A: AnswerIt will if after you connect it to your mobile phone via bluetooth. I answer/take calls from my fitbit sense 2, able to read text messages from it too! The latest fitbit software updates added the call’s microphone/speaker support which I really appreciate! Now I can talk via my watch conveniently, pretty clear audio! I believe quick text reply’s supported but I prefer doing that on my phone…Answered by themodernwiman
Q: QuestionDoes the metal in the watch contain nickel? I have an allergy.(2 answers)
A: AnswerIt hasn't bothered me and I am sensitive to nickel as well.Answered by SuzyQ
Q: QuestionDoes this HealthWatch measure blood pressure(2 answers)
A: AnswerNoAnswered by user677868
Q: QuestionCan the screen be seen in sunlight?(3 answers)
A: AnswerYes, and it looks very good.Answered by user677868
Q: QuestionIs the charging cable the same or compatible with that of the original Fitbit Sense?(3 answers)
A: AnswerYes it does. I had the first one and now have the second one.Answered by Johnny2268
Q: QuestionDoes sense 2 come with charger(3 answers)
A: AnswerYes. You will need the charger as it is unique.Answered by Mamacitaaaa
Fitbit - Sense 2 Advanced Health Smartwatch - Graphite
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Reviews
Rating 4.4 out of 5 stars with 1050 reviews
4.4Rating by feature
- 4.6Battery Life
Rating 4.6 out of 5 stars
- 4.6Durability
Rating 4.6 out of 5 stars
- 4.6Comfort
Rating 4.6 out of 5 stars
12 expert reviews
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Rated 5 out of 5 stars
My Essential Health Partner
The Fitbit Sense 2 Advanced Health Smartwatch has become my unwavering ally in health management. Being in a sedentary job, I needed something to keep me on my toes - literally - and this smartwatch has nailed it. It accurately tracks my daily walks, motivating me to meet my step goals, and sends subtle reminders to move when I've been idle for too long, which has been incredibly beneficial given my work nature. Equally impressive is its sleep tracking feature, providing a thorough breakdown of my sleep stages. This has allowed me to understand how sleep, or a lack thereof, impacts my stress levels, facilitating better self-care measures. And when my sleep isn't up to par, the device steps in with helpful tips for better sleep hygiene. The Fitbit Sense 2 doesn't stop at merely observing; it aids in stress management too. Recognizing the correlation between poor sleep and increased stress in my life, it provides tools like guided breathing and mindfulness sessions, which have been a boon during stressful workdays. Now, a feature that genuinely deserves appreciation is the silent alarm. As someone who shares a room with my wife and kids, I can't emphasize enough how invaluable this has been. The gentle wrist vibrations wake me up for work without disturbing my family's peaceful sleep - a feature that has been a game-changer in maintaining our morning routines. The design is sleek, comfortable for 24/7 wear, and the graphite finish lends it a chic, modern touch. Plus, the battery life is commendable, easily lasting a few days on a single charge. In summary, the Fitbit Sense 2 Advanced Health Smartwatch is more than a gadget; it's my personal health assistant, keeping me active, aiding in stress management, and ensuring harmonious mornings. For those looking to elevate their health and lifestyle, I couldn't recommend it more highly.
Posted by Umair
Rated 5 out of 5 stars
The chosen one…
I love this watch. It serves as my reminder the whole day that I need to stand up and move when I’m sitting for hours. It also serves as my alarm clock and monitors my heart rate. I can even do my ECG and even asks me how I feel for the day by having the stress management. I was having second thoughts on buying this but I based on my previous fitbit inspire which lasted for years that it needed an upgrade. I recommend buying this watch if you’re concern with health and fitness.
Posted by Dell
Rated 4 out of 5 stars
Great fit
Easy to use and track your health fitness and sleep habits
Posted by ALD7
