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Fitbit Sense 2 Advanced Health and Fitness Smartwatch with Tools to Manage Stress and Sleep, ECG App, SpO2, 24/7 Heart Rate and GPS, Lunar White/Platinum, One Size (S & L Bands Included)

Alexa Built-in
This device has been certified by Amazon. With Alexa built-in, just ask to set a timer, check the weather, control smart home devices, and more.
Purchase options and add-ons
Operating System | ios |
Memory Storage Capacity | 6 GB |
Special Feature | Sleep Monitor, Stress Tracking, ECG, Heart Rate Monitor, GPS, Activity Tracker, Water Resistant, Bluetooth Call and Message, Notifications, Alexa Built-in See more |
Battery Capacity | 60 Amp Hours |
Connectivity Technology | GPS |
Wireless Communication Standard | Bluetooth |
Battery Cell Composition | Lithium Ion |
GPS | Built-in GPS |
Shape | Heart |
Screen Size | 43 Millimeters |
About this item
- Learn to manage stress, sleep better and live healthier with Sense 2—our most advanced health and fitness smartwatch.Operating temperature : 14° to 113° F (-10° to 45° C)..Band material type : Silicone
- Manage stress and live healthier: all-day stress detection with cEDA and daily Stress Management Score, ECG app for atrial fibrillation assessment(1), irregular heart rhythm notifications(2), SpO2(3), health metrics dashboard(4), mindfulness content
- Measure and improve sleep quality: personalized Sleep Profile(5), daily sleep stages & Sleep Score, smart wake alarm and do not disturb mode
- Enhance activity: built-in GPS and workout intensity map, Daily Readiness Score(5), Active Zone Minutes, all-day activity tracking and 24/7 heart rate, 40+ exercise modes and automatic exercise tracking, water resistant to 50 meters
- Designed for all-day wear: on-wrist Bluetooth calls, texts and phone notifications(6), customizable clock faces, Fitbit Pay(7), Amazon Alexa built-in(8), Google Wallet & Maps (Google Maps on Android only, coming Spring 2023 to iOS), 6+ day battery(9)
- Includes a 6-month Premium membership complete with personalized insights, advanced analytics and more (New & returning Premium users only. Must activate trial within 60-days of device activation. Content and features may change)
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![]() Sense 2
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Customer Reviews
|
4.2 out of 5 stars 5,142
|
4.3 out of 5 stars 15,047
|
4.0 out of 5 stars 32,422
|
4.3 out of 5 stars 10,240
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4.3 out of 5 stars 18,914
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Price
| $249.95$249.95 | $164.99$164.99 | — | — | $91.44$91.44 |
Battery life (in days)
| 6 | 6 | 7 | 5 | 10 |
Steps, distance & calories
| ✔ | ✔ | ✔ | ✔ | ✔ |
24/7 heart rate & AZM
| ✔ | ✔ | ✔ | ✔ | ✔ |
Built-in GPS
| Yes | Yes | Yes | Connected GPS | Connected GPS |
Sleep tracking & sleep stages
| ✔ | ✔ | ✔ | ✔ | ✔ |
Sleep Profile & Sleep Score
| ✔ | ✔ | ✔ | ✔ | ✔ |
Blood Oxygen (SpO2)
| ✔ | ✔ | ✔ | ✔ | ✔ |
Stress Management Score
| ✔ | ✔ | ✔ | ✔ | ✔ |
All-day body response tracking
| ✔ | ✘ | ✘ | ✘ | ✘ |
ECG app for Afib detection
| ✔ | ✘ | ✔ | ✘ | ✘ |
Call, text & app notifications
| ✔ | ✔ | ✔ | ✔ | ✔ |
Alexa built-in
| ✔ | ✔ | ✘ | ✘ | ✘ |

Product Description
Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Fitbit is part of the Google family. 1) The Fitbit ECG app is only available in select countries and with select devices. Not intended for use by people under 22 years old. See fitbit.com/ecg for additional details. 2) Irregular rhythm notifications are only available in select countries and with select Fitbit products; not intended for use by people under 22 years old or with other known arrhythmias. See fitbit.com/irregularrhythm for additional details. 3) Not available in all markets. The SpO2 feature is not intended to diagnose or treat any medical condition or for any other medical purpose. It is intended to help you manage your well-being and keep track of your information. 4) The Health Metrics dashboard and the metrics displayed in the dashboard are not available in all countries. This feature should not be relied on for any medical purposes. It is intended to provide information that can help you manage your well-being. The SpO2 feature requires more frequent charging. 5) Requires a Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only. 6) When phone is nearby. 7) See bank and transit availability at fitbit.com/fitbit-pay/banks 8) 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. 9) Varies with use and other factors. Up to 12 hours with continuous GPS. Get 24 hours of charge with 12 minutes of charging. 10) 6 months of Premium for New Premium users only. Must activate with device. Valid payment method required. Free trial must be activated within 60 days of device activation. Cancel before free trial ends to avoid subscription fees. Requires use of Fitbit app with compatible iPhone or Android devices. A Google account will be required.
Product details
- Product Dimensions : 1.57 x 0.47 x 1.57 inches; 6.74 ounces
- Item model number : Sense 2
- Department : mens
- Batteries : 1 Lithium Ion batteries required. (included)
- Date First Available : September 23, 2022
- Manufacturer : Fitbit Inc
- ASIN : B0B4N7LSM6
- Best Sellers Rank: #2,972 in Electronics (See Top 100 in Electronics)
- #100 in Smartwatches
- Customer Reviews:
Product guides and documents
Compare with similar items
This Item ![]() Fitbit Sense 2 Advanced Health and Fitness Smartwatch with Tools to Manage Stress and Sleep, ECG App, SpO2, 24/7 Heart Rate and GPS, Lunar White/Platinum, One Size (S & L Bands Included) | Recommendations | |||||
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Price | -8% $228.95$228.95 List: $249.95 | $179.99$179.99 | -5% $94.50$94.50 List: $99.95 | -24% $189.00$189.00 List: $249.00 | -18% $329.00$329.00 List: $399.00 | -38% $49.99$49.99 List: $79.99 |
Delivery | Get it Jun 30 - Jul 2 | Get it as soon as Sunday, Jun 29 | Get it as soon as Sunday, Jun 29 | Get it as soon as Sunday, Jun 29 | Get it as soon as Sunday, Jun 29 | Get it as soon as Sunday, Jun 29 |
Customer Ratings | ||||||
Sold By | Essentials Supplied (S/N Recorded) | RongTianSheng Technology | HALF TIME | Amazon.com | Amazon.com | FITVII STORE |
size | 1 | Standard | 1 | 40mm Case + Small/Medium band | 42mm case + Small/Medium band | 1.57'' |
operating system | ios | Android Compatible, Ios Compatible | android | watchos | watchos | Android 5.1 / iOS 10.0 or above |
display size | 43 millimeters | 1.72 inches | 0.76 inches | 40 millimeters | 42 millimeters | 1.57 inches |
connectivity tech | GPS | Bluetooth | Bluetooth | GPS | GPS | Bluetooth |
supported applications | GPS, Sleep Monitor | Fitness Apps | Sleep Monitor, Heart Rate Monitor, Alarm, Phone, Fitness Tracker, Reminders | GPS, Sleep Monitor | GPS | Fitness Tracker |
input interface | touch screen | touch screen | touch screen | touch screen, buttons | touch screen, buttons | touch screen |
wireless standard | bluetooth | bluetooth | bluetooth | 802 11 N, bluetooth | 802 11 N, bluetooth | bluetooth |
water resistance | water resistant | water resistant | water resistant | water resistant | water resistant | waterproof |
case material | Stainless Steel or Aluminum | metalline | lilac | Aluminum | Aluminum | — |
gps navigation | Built-in GPS | GPS Via Smartphone | GPS Via Smartphone | Built-in GPS | Built-in GPS | GPS Via Smartphone |
water resistant depth | 50 meters | 50 meters | 50 meters | 50 meters | 50 meters | 1 meters |
Important information
Wattage
50 watts
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers appreciate the smartwatch's appearance and features, particularly its information-providing capabilities. The battery life receives mixed feedback, with some praising its incredible performance while others report it dying faster than older models. The functionality, quality, sleep tracking, and accuracy receive mixed reviews, with several customers reporting issues with features not working half the time, poor sleep tracking, and inaccurate heart rate monitoring. Value for money is also mixed, with some finding it worth the money while others say it's not worth the price.
AI Generated from the text of customer reviews
Customers like the appearance of the smartwatch, appreciating its good display and new style, with one customer specifically mentioning the light gray band.
"...The quick start guide and app were helpful. I love the style of charger! I do not like the silicon bands but I did order some..." Read more
"...Pros: appearance, comfort, technically does what it says, just not very well..." Read more
"...Do not like that about it but otherwise I like it. I like how it looks." Read more
"...Looks good depending on your watchband. There are good looking stainless steel bands that make you feel like you're wearing a real watch with some..." Read more
Customers love all the features of the smartwatch, particularly appreciating the information it provides.
"So far I have been very happy with my watch, I like the extra features on it." Read more
"Maintains battery life longer than my last FitBit. Good value. Love the features! Charges quickly." Read more
"...This model does not disappoint. Easy to use. So many more options." Read more
"...I would recommend getting the Sense 2 as it is more accurate and has more features!" Read more
Customers have mixed experiences with the smartwatch's functionality, with some finding it works well and does everything they need, while others report that it stops working properly and features don't work half the time.
"...the watch freaked out in every shower and would hard lock on the heart test which also was impossible to ever complete a test on...." Read more
"...Pros: appearance, comfort, technically does what it says, just not very well..." Read more
"...It is SO glitchy. It takes me several tries to get the touch screen to work bc the screen scrolls and jumps around on its own." Read more
"...is to help monitor my sleep and a couple months back this function just quit working. Charges fast. Long batter life. Not too heavy...." Read more
Customers have mixed experiences with sleep tracking on this smartwatch, with some finding it very useful for fitness monitoring while others report poor performance and mention that the feature stops working after two months.
"...I am very satisfied with the Fitbit Sense 2. It has made me aware of my steps and my sleep pattern even oxygen levels all of which are very..." Read more
"This is a very useful fitness tracker and smart watch. I don't use the smart watch functions...." Read more
"...I have lost a lot of sleep data due to the connectivity and app issues though which was a big factor I purchased the sense rather than the apple..." Read more
"...i’ve been pretty much dissapointed from day 1. the heart rate sensor is far more accurate which is the most important feature to me, however the..." Read more
Customers have mixed opinions about the smartwatch's quality, with some finding it great while others describe it as really bad.
"...over the past several years the quality has steadily degraded since google purchased fitbit and overhauled all the software that actually worked..." Read more
"I need to replace my older Fitbit. This model does not disappoint. Easy to use. So many more options." Read more
"...The watch itself hasn’t held up well over the last year. There are bubbles around the edge of the faceplate...." Read more
"The band wears well, comfortable, easy to adjust, looks nice on...." Read more
Customers have mixed experiences with the smartwatch's battery life, with some praising its incredible performance and quick 30-minute charging time, while others report that it stops keeping a charge and dies faster than older models.
"...this one more regularly than the previous one and it stopped charging much earlier...." Read more
"Great battery life and charger. The watch is much lighter than other models. So far satisfied with my purchase." Read more
"...At first the battery didn’t seem to last long and took a very long time to charge. The longer I have it, the better the battery seems to be...." Read more
"...This watch is amazing, Battery last 6 to 7 days, and that is great!,..." Read more
Customers have mixed opinions about the smartwatch's value for money, with some finding it worth the money and appreciating the lower subscription cost, while others feel it's not worth the price.
"...accurate which is the most important feature to me, however the band is cheaper than the chinese 3 packs you used to get for a 10 dollar bill.the..." Read more
"Maintains battery life longer than my last FitBit. Good value. Love the features! Charges quickly." Read more
"...I’ve tried everything. VERY FRUSTRATED! Too expensive to only last 2 years...." Read more
"...I switched from a Whoop due to the lower subscription cost and it offers a watch face. I wore both for two weeks and compared the data...." Read more
Customers have mixed experiences with the smartwatch's accuracy, with several reporting that the heart rate monitor is not reliable.
"...heart rate sensor was completely inaccurate. was 10-15 bpm higher than the charge 3 and didnt match any other watch or exercise equipment i tried...." Read more
"...Another cool feature is you can see the messages you receive on your phone once you sync it to your phone" Read more
"...Some problems that are unresolved: 1. Heart rate inaccurate and/or not measuring at all...." Read more
"...Unfortunately the HR monitor is inaccurate as F, so its reading almost 50BMP LOW, so it calculates your calorie burn lower...." Read more
Reviews with images

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Top reviews from the United States
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- Reviewed in the United States on May 12, 2025Color: Lunar White/PlatinumVerified PurchasePurchased for overall health & sleep tracking. I am very satisfied with the Fitbit Sense 2. It has made me aware of my steps and my sleep pattern even oxygen levels all of which are very important for good brain health. I could not pay the price for the others but love this one and recommend it to all wanting to improve their health by actually seeing what Sense 2 tracks.
- Reviewed in the United States on May 13, 2025Color: Lunar White/PlatinumVerified PurchaseMy sense 2 was very easy to set up. The quick start guide and app were helpful. I love the style of charger! I do not like the silicon bands but I did order some
Metal bands that fit perfectly. I’m very pleased with my new smart watch!
My sense 2 was very easy to set up. The quick start guide and app were helpful. I love the style of charger! I do not like the silicon bands but I did order some
Metal bands that fit perfectly. I’m very pleased with my new smart watch!
Images in this review
- Reviewed in the United States on June 2, 2025Color: Lunar White/PlatinumVerified PurchaseSo far I have been very happy with my watch, I like the extra features on it.
- Reviewed in the United States on April 16, 2025Color: Lunar White/PlatinumVerified PurchaseThis is a very useful fitness tracker and smart watch. I don't use the smart watch functions. I wanted it to track workouts and monitor heart rate and activity. I am very happy with the purchase.
It takes a little effort to learn how to use it, but help information is readily available on the website.
- Reviewed in the United States on July 20, 2024Color: Lunar White/PlatinumVerified Purchasei was a diehard fitbit customer since 2016. over the past several years the quality has steadily degraded since google purchased fitbit and overhauled all the software that actually worked with the product. i would have recommended fitbit for years but now i would warn people against it.
Major cons: life/durability, connectivity and functionality
Durability: i bought my first fitbit sense in December 22 and it died by December 23. I bought this fitbit sense 2 in January 2024 and now it is experiencing the same charging issue. the charging prong connections get clogged over time due to sweat or dirt, but i cleaned this one more regularly than the previous one and it stopped charging much earlier. I can still kind of get the new one to work if I stand and hold the charger there and wiggle it around till it connects, then gently place it and make sure it doesn’t disconnect, but it is definitely on it’s way out. It used to stay charged for 5 days on one charge if I didn’t use GPS, now it is 2-3 days and I have to be super careful about not letting it get to zero because it is impossible to tell if it is connected once it dies fully. EDIT: I wrote this review July 20, 2024; as of August 20, 2024 the Fitbit sense 2 will not charge no matter what I do so I cannot even reset it or update it because it won’t turn on. Don’t waste your money (I also have 4 sense chargers & none work - it is definitely the watch)
Connectivity: every single time I open the fitbit app it is a fight to sync the device and takes probably about 15-30 mins on average to get to work. it is infuriating, and when it does finally sync, half the information doesn’t show up correctly so you have to try to run it again or wait another 15-30 minutes for that to show up. Two nights ago I was trying to sync for over 2 hours. This is really frustrating while I’m in the middle of a workout, especially a run where I don’t want to stop and fiddle with my watch/phone, or when I’m trying to quickly check my stats on the go
Functionality: This isn’t the WORST thing about it - it does its job for tracking for the most part. I have lost a lot of sleep data due to the connectivity and app issues though which was a big factor I purchased the sense rather than the apple watch initially so I’m annoyed about that. They also got rid of all the social features in the app in January. I also learned recently you don’t have to pay a premium subscription for a lot of the analytics (sleep, cardio health, etc) you do on Fitbit if you get a garmin or apple watch. Sometimes I feel like the tracking is lagging compared to its competitors, it feels like google is just stagnating Fitbit using its established consumer base until they can get more marketshare with the pixel watch.
Pros: appearance, comfort, technically does what it says, just not very well
All that being said, if it wouldn’t keep dying within a year of purchase and it would actually connect to my phone/the app actually worked I would probably buy another sense next just because I am familiar with it, it does the trick, and it has all my past data. However it doesn’t seem like that will be improving so I will have to switch on my next fitness tracker I have to buy, which will probably be quite soon unfortunately. EDIT: i will not ever buy a sense again actually, see previous edit
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Reviewed in the United States on May 24, 2025Color: Lunar White/PlatinumVerified PurchaseEnamorada de mi fitbit
- Reviewed in the United States on May 13, 2025Color: Lunar White/PlatinumVerified PurchaseI would recommend it.
- Reviewed in the United States on November 23, 2022Color: Lunar White/PlatinumVerified PurchaseWow! I almost didn't buy this based on the bad reviews but either those folks got a lemon or they have different expectations. I want to start by saying I CAN receive and respond to calls on my Fitbit Sense 2. Not sure if the type of phone matters but I have a Google Pixel phone. I've tried out the ECG and the stress tester and I'm happy with those features. If you read some of the bad reviews, you will notice people are complaining about a lot of things, but you have to ask yourself, what is it you really need in your Fitbit? Some complained about lack of Apps . . . well, I don't really care about that. If I want lots of apps, I'll load them on my phone. Music? Same deal. I see no point in loading music on my watch. I can access millions of songs through my phone so I use that along with blue tooth ear buds.
Over the years I've heard numerous complaints about step accuracy on ANY device. What do people expect? Do they want to know for sure if it was 100 vs 110 steps? Seriously? I believe the Fitbit is very accurate but nothing is 100%. Do you really need to know EXACTLY how many steps you took? Isn't the whole point to just get up and move? If it turns out my Fitbit is not 100% accurate, I don't care! As long as it reminds me to move and I get my exercise, I'm happy.
I also want to address the issue of the new band. Some folks HATE it. I don't. I think it is much more comfortable than the other model but everyone has different levels of comfort. I'll close this by saying I love my new Sense 2 and I believe most folks will love theirs. By all means, read the negative reviews but keep in mind what is important to you when making your decision.
Top reviews from other countries
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LuzReviewed in Mexico on March 10, 2024
5.0 out of 5 stars Muy bueno
Color: Lunar White/PlatinumVerified PurchasePráctico, diseño bonito; facil de usar; preciso
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Veronica coReviewed in Mexico on August 4, 2023
5.0 out of 5 stars Mide mi estrés y me encanta
Color: Lunar White/PlatinumVerified PurchaseSi me gustó mucho para monitorear mi sueño también
- Linley MaddickReviewed in Australia on December 22, 2024
1.0 out of 5 stars Doesn’t have Google Assistant included!
Color: Lunar White/PlatinumVerified PurchaseThe Fitbit Sense included, as part of it’s operation, the Google Assistant app, this Fitbit was more expensive but did not! Why?
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Henessy RamosReviewed in Mexico on February 19, 2023
4.0 out of 5 stars Bueno
Color: Lunar White/PlatinumVerified PurchaseThe media could not be loaded.
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DanielaReviewed in Mexico on December 6, 2022
3.0 out of 5 stars Este y otros dos tuvieron problemas con la batería.
Color: Lunar White/PlatinumVerified PurchaseLa batería se acaba en al menos dos horas o dos horas y media.
Además la interfase es muy y lenta muy ineficiente. Significativamente representa un retroceso en el producto.
No lo recomiendo en lo absoluto.
Lo regresé.
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