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Specifications
  • Touch Screen
    Yes
    Operating System Compatibility
    Android, Apple iOS
    App Compatible
    Yes
    Global Positioning
    GPS, GLONASS
    Metrics Measured
    Activity 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, Glucose
    Protective Qualities
    Water resistant, Dust resistant
  • Key Specs
    • Touch Screen: true (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
    • Operating System Compatibility: Android, Apple iOS
    • App Compatible: true (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
    • Global Positioning: GPS, GLONASS (A system of satellites which enables a mobile receiver to determine its precise location based on signals received from satellites such as the US Global Positioning System (GPS), the Russian Global Navigation Satellite System (GLONASS), the European Global Navigation Satellite System (Galileo), or the Japanese Quasi-Zenith Satellite System (QZSS).)
    • Metrics Measured: Activity 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, Glucose
    • Protective Qualities: Water resistant, Dust resistant
    • Maximum Depth of Water Resistance: 164 feet (Measurement of the maximum depth of water in which the product is able to resist some degree of water penetration.)
    • Band Material: Silicone
  • General
    • Brand: Fitbit
    • Model Number: FB521SRWT-US
    • Product Name: Sense 2 Advanced Health Smartwatch
    • Color: Platinum
    • Product Type: Smartwatch
    • Form Factor: Wristwatch (The size, arrangement, and physical configuration of the product.)
    • Model Family: Fitbit Sense 2
    • Year of Release: 2022
  • Design
    • Case Shape: Rounded square
    • Band Type: Infinity
    • Band Color: Lunar White
    • Clasp Type: Other
  • Display
    • Display Screen: true
    • Touch Screen: true (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
    • Display Type: AMOLED
    • Color Display: true
    • Clock Display: true
    • Backlit Display: true (Integrated lights allow for visibility of the display in low-light conditions.)
    • Adjustable Brightness: true
    • Customizable Watch Faces: true
  • Compatibility
    • Operating System Compatibility: Android, Apple iOS
    • App Compatible: true (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
    • Voice Assistant Built-in: Amazon Alexa (A digital assistant built into the device that uses voice commands to answer questions and control smart devices.)
  • Connectivity
    • Data Plan Required: false
    • Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
  • Features
    • GPS Enabled: true
    • Global Positioning: GPS, GLONASS (A system of satellites which enables a mobile receiver to determine its precise location based on signals received from satellites such as the US Global Positioning System (GPS), the Russian Global Navigation Satellite System (GLONASS), the European Global Navigation Satellite System (Galileo), or the Japanese Quasi-Zenith Satellite System (QZSS).)
    • Mobile Notifications: true
    • Alert Type: Vibration, Visual
    • Silent Alarm: true
    • Built-In Microphone: true
  • Activity
    • Metrics Measured: Activity 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, Glucose
    • Multi-Sport Tracking: true
    • Sensors: Accelerometer, Altimeter, Ambient light sensor, Electrical heart rate (ECG) sensor, Optical heart rate (PPG) sensor, Pulse oximeter (Sp02) sensor, Temperature sensor (Detects stimuli such as heat, light, sound, motion, or pressure and responds accordingly by operating a control or initiating a function of the device.)
  • Performance
    • Protective Qualities: Water resistant, Dust resistant
    • Maximum Depth of Water Resistance: 164 feet (Measurement of the maximum depth of water in which the product is able to resist some degree of water penetration.)
    • Minimum Operating Temperature: -14.0 degrees fahrenheit (The lowest recommended ambient (surrounding) temperature in which the product can ideally operate stated by the manufacturer. Generally long-term exposure of the product to temperatures less than the minimum can result in ineffective operation.)
    • Maximum Operating Temperature: 113 degrees fahrenheit (The highest recommended ambient (surrounding) temperature in which the product can ideally operate stated by the manufacturer. Generally long-term exposure of the product to temperatures more than the maximum can result in ineffective operation.)
  • Dimensions
    • Product Width: 1.59 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Length: 9.79 inches (The out of box length of the item. Length is measured as the longest dimension of the item.)
    • Minimum Wrist Size: 139.7 millimeters
    • Maximum Wrist Size: 220.98 millimeters
    • Size: Adjustable
    • Band Size: Adjustable
  • Power
    • Rechargeable: true
    • Charging Interface(s): Other (The connection for transmitting power to charge the device.)
    • Replaceable Battery: false
  • Material
    • Band Material: Silicone
    • Case Material: Aluminum
  • Other
    • UPC: 810073611443

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
Whats Included
  • Fitbit Sense 2
  • Infinity Band (Small & Large)
  • Charging Cable

Q: Currently, I have the Fitbit Sense 1, and I have a sports band that I paired with it, will the new Fitbit 2 fit? Are the measurements of the two brands identical in size?

A: Yes, the same bands seem to fit from my original Sense 1. It's missing many of the features of the Sense 1 though, it's essentially a downgrade from the original

Q: Does this watch detect irregular heart beats or afib?

A: I 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.

Q: Do this fitbit have a telephone number ? M

A: It 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…

Q: Does the metal in the watch contain nickel? I have an allergy.

A: It hasn't bothered me and I am sensitive to nickel as well.

Q: Can the screen be seen in sunlight?

A: Yes, and it looks very good.

Q: Is the charging cable the same or compatible with that of the original Fitbit Sense?

A: Yes it does. I had the first one and now have the second one.

Fitbit - Sense 2 Advanced Health Smartwatch - Platinum - (2022)

Model: FB521SRWT-US
SKU: 6514038
$249.95
Save $12.95
Comp. Value: $249.95
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Pros for Fitbit - Sense 2 Advanced Health Smartwatch - Platinum - (2022)
Battery Life, Ease of use, Sleep Tracking, Features, Heart RateBattery Life, Ease of use, Sleep Tracking, Features, Step TrackingBattery Life, Sleep Tracking, Ease of use, Screen Size, Overall PerformanceBattery Life, Features, Size
Cons for Fitbit - Sense 2 Advanced Health Smartwatch - Platinum - (2022)
Band, GPS, Connectivity, Screen, AccuracyBand, Connectivity, GPSBand, Price, Blood OxygenThere were no cons for this product

Specs

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Reviews

Customers are saying

Customers praise the Sense 2 Advanced Health Smartwatch's excellent battery life and ease of use, finding it straightforward to operate and sync with their phones. Many appreciate the comprehensive health and fitness tracking capabilities, particularly sleep and heart rate monitoring, although some users experienced issues with the accuracy of these features. A few customers mentioned concerns about the watch band and screen size.

This summary was generated by AI based on customer reviews.

Customer Images

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.

    This review is from Fitbit - Sense 2 Advanced Health Smartwatch - Graphite - (2022)

    Posted by Umair

  • Rated 4 out of 5 stars

    No regrets

    Overall I think the Sense2 is a good product. It does a pretty good job of tracking sleep and steps; however, heart rate appears to be variable and not always accurate. The device needs to be incredibly tight against the wrist to give an accurate reading. The wristband wears out after a few weeks, where the fastener will not stay in place. Despite this, I do not regret this purchase and enjoy its utility.

    This review is from Fitbit - Sense 2 Advanced Health Smartwatch - Graphite - (2022)

    Posted by Melsim

  • Rated 5 out of 5 stars

    Watch You Can Trust for Accuracy

    I am more than thrilled with this Fitbit watch. I tried about four others before this one and this one is the only one that actually reads the correct steps. What good is a fitness watch if it is not accurate? I also really like that it keeps track of your sleep hours and how you sleep detailing your deep sleep, REM sleep, etc. Usually watches drive me crazy because they are uncomfortable to wear. This one is great. The watch bands are so comfortable that I forget I am wearing one. I like that you can read and reply to your texts on your watch and know if somebody calls you. You can answer and talk on the phone also if you want to. I also like the feature that lets you keep track of the water you drink daily. There are several other features like weather, find my phone, exercises, check your heart rate ,blood pressure, set alarms, Alexa etc. I can’t think of anything this watch doesn’t do, and does everything perfectly. Finally, the watch faces are cute too!

    Posted by JeanineA

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