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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, Blue Mist/Pale Gold, One Size (S & L Bands Included)
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
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
Brand | Fitbit |
Model Name | Fitbit Sense 2 |
Style | Modern |
Color | Blue Mist/Pale Gold |
Screen Size | 1.69 Inches |
Special Feature | Sleep Monitor, Stress Monitor, Sleep Monitor, ECG, Oxymeter (SpO2), Heart Rate Monitor, GPS, Time Display, Notifications, Water Resistant See more |
Shape | Heart |
Target Audience | Unisex Adult |
Age Range (Description) | Adult |
Compatible Devices | Smartphone |
About this item
- Learn to manage stress, sleep better and live healthier with Sense 2—our most advanced health and fitness smartwatch
- 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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From the manufacturer
Shop the Fitbit Collection
Sense 2 | Versa 4 | Charge 5 | Luxe | Inspire 3 | |
Customer Reviews
|
4.2 out of 5 stars
3,391
|
4.3 out of 5 stars
9,025
|
4.1 out of 5 stars
30,521
|
4.3 out of 5 stars
9,327
|
4.4 out of 5 stars
10,588
|
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; 1.28 ounces
- Item model number : FB521GLBM-US
- Batteries : 1 Lithium Ion batteries required. (included)
- Date First Available : September 23, 2022
- Manufacturer : Fitbit Inc
- ASIN : B0B4MV1TGL
- Country of Origin : China
- Best Sellers Rank: #4,266 in Electronics (See Top 100 in Electronics)
- #123 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, Blue Mist/Pale Gold, One Size (S & L Bands Included) | Recommendations | dummy | dummy | dummy | |
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Price | -18% $246.00$246.00 List: $299.95 | -17% $249.95$249.95 List: $299.95 | $199.95$199.95 | $199.00$199.00 | $99.95$99.95 |
Delivery | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 | — | — |
Customer Ratings | |||||
Sleep tracking | 3.8 | 4.2 | 3.9 | 4.1 | 3.9 |
Accuracy | 3.6 | 3.7 | 4.3 | 4.1 | 3.9 |
Mobile App | 3.6 | 4.0 | 3.8 | 3.8 | 4.0 |
Battery life | 3.9 | 4.2 | 4.0 | — | 4.5 |
Value for money | 3.3 | 3.2 | 1.6 | — | — |
Sold By | Amazon.com | Amazon.com | Amazon.com | Safe 'N Quick | Amazon.com |
operating system | ios | ios | ios | — | android |
display size | 1.69 inches | 1.69 inches | 1.69 inches | — | 1968.51 inches |
connectivity tech | Bluetooth | Bluetooth | Ethernet | Bluetooth | — |
supported applications | GPS, Phone, Voice Assistant | GPS, Sleep Monitor | GPS, Phone | GPS | Sleep Monitor, Heart Rate Monitor, Alarm, Phone, Fitness Tracker, Reminders |
input interface | touch screen | touch screen | touch screen stylus pen | touch screen | touch screen |
wireless standard | bluetooth | bluetooth | bluetooth | bluetooth | bluetooth |
Videos
Videos for this product
3:10
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Fitbit Sense 2 vs Fitbit Versa 4 - Which One Is Better?
Marcus Stone
Videos for this product
3:42
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Fitbit Sense 2 - Watch Before You Buy
The Product Lab
Videos for this product
0:52
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This is what you need to know before you buy in 1 minute!
Kim & Karym
Important information
Wattage
180 watts
Legal Disclaimer
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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 like the appearance of the wearable computer. They mention that it looks better with the metal alloy embedded in the display, and has a lovely color screen display with some fancy graphics. They also appreciate the soft gold color of the watch. That said, opinions are mixed on apps, ease of use, accuracy, performance, battery life, and quality.
AI-generated from the text of customer reviews
Customers like the appearance of the wearable computer. They mention that they love the look and color of the watch. They also appreciate the metal alloy embedded in the display, and the lovely color screen display with some fancy graphics. The watch casing is a soft gold color, like you might see on a car. Overall, customers are happy with the appearance and functionality of the product.
"...I think it's very pretty, albeit larger than I like in a watch. I have tiny wrists and large watch bands/faces are awkward on me...." Read more
"...It looks great in this very light blue color with the soft gold frame. 5-6 days between charges...." Read more
"I really wanted to love this product! It has a lovely color screen display with some fancy graphics...." Read more
"...I'm still getting to use to it since I just got it today. I love the color of my band. It was easy to set up since I already had an account." Read more
Customers are mixed about the quality of the wearable computer. Some mention that it's a good product, while others say that it is not better than the first and is a disappointment.
"...I really am! They lie, they are not educated and their products are awful! Please do not support this company! Now I’ve got to call back?..." Read more
"Update to my previous review: Leaving at 5 stars for quality, durability, and features. Battery life seems to be about the same as my old Fitbit HR...." Read more
"...I never had trouble synching to the app. I upgraded to a Sense 2 and it's awful. It's is hard to pair and doesn't properly sync 90% of the time...." Read more
"...This is the best one by far. Worth the price" Read more
Customers are mixed about the accuracy of the wearable computer. Some mention that tracking their heart rate is a great help along with tracking their exercising and sleep, and the oxygen sensor and heart rate monitor were very accurate. However, others say that the heart rate tracking is useless, making it a glorified pedometer for workouts, and that it doesn't track steps accurately when they do pool exercises.
"This Fitbit is great. My dad wears it all day and night...." Read more
"...Overall I am happy with it. It tracks sleep, activity, heart rate, steps climbed, stress,, and you can track food in the app...." Read more
"...Haven't allowed it to go less than 20%.It does not track steps accurately when I do pool exercises...." Read more
"The Fitbit Sense 2 is an excellent product especially for fitness tracking. The watch has great battery life and charges very quickly...." Read more
Customers are mixed about the performance of the wearable computer. Some mention that it works great, is easy to set up, and does all the usual smartwatch things well. However, others say that it keeps losing sync and the find my phone never works. Some say that the ECG feature works well, while others say there is no shortcut for it.
"...One day i took it off yo give my kids a bath and the next the unit wouldn't start after multiple attempts to charge it...." Read more
"...it in the pool, hot tub, and shower today and there were no problems with it at all. Just be sure to read all the instructions carefully...." Read more
"...it and several other features off because they are not helpful or simply do not work...." Read more
"...trying to convert over and have just discovered that Fitbit only works with Gmail now. That’s so disappointing...." Read more
Customers are mixed about the ease of use of the wearable computer. Some mention it's relatively easy to set up, while others say the instructions are not clear enough. They also say it'd be challenging to figure out and too complicated.
"...It was relatively easy to set up...." Read more
"...The ECG feature works well but there is no shortcut for it making it difficult to find when you want to use it...." Read more
"...It monitors my heart rate well, and ECGs are easy to do. You can’t have a case on if you want to do ECGs though. Overall it’s a mixed bag...." Read more
"...It was a bit challenging to set some things up. I still have some trouble with the weather synching but it usually works really well...." Read more
Customers are mixed about the battery life of the wearable computer. Some mention that it has great battery life and charges very quickly, while others say that it does not last 6 days, dies after 15 days, and is impossible to keep charged. The battery is bad and dies constantly. It starts turning off randomly and the feature drains lots of battery. The watch needs charging often and keeps shutting down and restarting.
"...Battery life seems to be about the same as my old Fitbit HR. Initially, I got about 5 days out of the first couple of charges...." Read more
"Very disappointed on my fitbit Sense 2, completely died without warning. I didn't drop it, hit it in any way...." Read more
"This Fitbit is great. My dad wears it all day and night. The battery lasts much longer than my Apple Watch and I can track his heart rate in the app..." Read more
"Like the watch but battery needs charging often. Like every 3 days." Read more
Customers are mixed about the apps. Some mention that the apps are decent and useful, while others say that it doesn't support 3rd party apps. They also mention that it looks terrible and can't do things the old app could.
"...my new one then a few Iweeks ago Fitbit changed the app and the app it horrible. They are receiving a lot of bad feedback from unhapy cusstomers...." Read more
"...The ECG app is very useful and the 24/7 heart rate tracking as well. I bring all the reports with me to my cardiologist appointments...." Read more
"...The only negative is I can’t use my Starbucks app. It is a small complaint. You can’t go wrong." Read more
"...The Sense had many more options than the 2, because the 2 does not support 3rd party apps...." Read more
Customers are dissatisfied with the charge of the wearable computer. They mention that it wouldn't charge and didn't work at all.
"...Long battery life too.But now I can't charge it. I tried super glue but it keeps falling off. I will continue to try putting it back on...." Read more
"I had my Fitbit Sense 2 not even 2 years and it just stopped charging...." Read more
"...Works great when working. But not after 5 weeks. It wouldn't take a charge which meant it didn't work at all...." Read more
"...After realizing that the watch would not charge and or wouldn't connect to phone I went through the process to return the watch...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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It does not track steps accurately when I do pool exercises. I manually calculated about 2400 steps during my pool therapy and the tracker only counted a bit over 1900, including steps walking to and from the pool and so forth. All total, there should have been closer to 3000 steps so that's a pretty big disparity. Frankly, I have not found any fitness tracker to be very accurate with step count during exercise as it depends on how much arm swing is involved.
Previous Review: Received my Fitbit Sense 2 (Mist blue and light gold) a few days ago and I love almost everything about this fitness tracker. The mist blue color is a pale blue-grey. The watch casing is a soft gold color like you might see on a car. It matches the seller's photo perfectly (on my PC monitor anyway.) I think it's very pretty, albeit larger than I like in a watch. I have tiny wrists and large watch bands/faces are awkward on me. But, to get the features I wanted, it's worth getting used to. I don't care for silicone bands as they don't breathe but I suppose for a sport watch, it might be the best option. The buckling system was concerning for me because you have to pop the band hole over a pin, then tuck it under on the other side against your wrist. It looked like it would be uncomfortable to clasp it and wear, but I'm happy to say it's not. Just feels a bit weird to me because it's bulky for my wrist size.
It was relatively easy to set up. The only difficulty I had was when I logged into my Fitbit app previously associated with my Fitbit Charge HR, it kept asking me to log into my account, but I was already logged in. When I entered my password, it said it was incorrect but it wasn't. I finally tried using my email PW and got into my account. What was confusing was, the Fitbit logo was at the top next to, "log into your account." So, buyer be aware, if you have to log into an existing Fitbit account, they want your email address/PW, not Fitbit PW.
The biggest reason I chose this model was for water use. I have to do pool therapy and wanted all my steps and activities to be logged in real-time. I wore it in the pool, hot tub, and shower today and there were no problems with it at all. Just be sure to read all the instructions carefully. You can get more info on the Fitbit website for details on setup, use, and care. The device only came with quick setup instructions in the box.
I haven't really paid much attention to the sleep tracking as I have a sleep number bed that tracks that. And I haven't compared it against another heart rate monitor. However, based on the level of activity and how I felt during pool walking and exercises, it seemed like the numbers were relatively accurate.
My favorite feature is the hourly buzz to get moving. It not only buzzes on my wrist to alert me it's time to move, but after I get up and walk around, it buzzes again to let me know I've completed 250 steps (based on my current setup.) This feature is priceless as I sit at a PC all day and forget to move.
Overall, 3 days in, I'm very happy with this purchase and feel that the price was fair compared to similar devices with the same features. It also came with 6 months of free premium app services which I appreciate because it gives me a good amount of time to decide if I want to continue with the premium for a monthly fee. I do not find that app either intuitive or user-friendly and it will take some time for me to get the hang of using it.
Should I run into any problems with my Sense 2 in the future I'll update this review.
So it's a good watch. It's just not better than the first.
Top reviews from other countries
Reviewed in Australia on December 18, 2023
Detecta bien el ritmo cardíaco en reposo (aún no reviso si lo hace bien cuando hago ejercicio) y la oxigenación solo te da un estimado por la mañana de cuando duermes. He notado que a veces no detecta bien cuando despierto.
Las funciones de la app están bien, son buenas. Lo malo es que no se puede conectar a Spotify, WhatsApp ni se pueden hacer llamadas. Solo de puede contestar las llamadas en el reloj y ver las notificaciones de sms o mail o conectar a Google maps desde el teléfono y ver las instrucciones en el reloj.
Algo que sirve como tip es que cuando te laves las manos o si te bañas con el procura quitartelo y secar bien todo, a mi me estaba irritado la piel si se quedaba un poco húmedo.
Estoy conforme con la compra ya que lo que más buscaba era un reloj que me ayudara a darme una idea de cómo esta mi frecuencia cardíaca y oxigenación.
Reviewed in Mexico on July 31, 2023
Detecta bien el ritmo cardíaco en reposo (aún no reviso si lo hace bien cuando hago ejercicio) y la oxigenación solo te da un estimado por la mañana de cuando duermes. He notado que a veces no detecta bien cuando despierto.
Las funciones de la app están bien, son buenas. Lo malo es que no se puede conectar a Spotify, WhatsApp ni se pueden hacer llamadas. Solo de puede contestar las llamadas en el reloj y ver las notificaciones de sms o mail o conectar a Google maps desde el teléfono y ver las instrucciones en el reloj.
Algo que sirve como tip es que cuando te laves las manos o si te bañas con el procura quitartelo y secar bien todo, a mi me estaba irritado la piel si se quedaba un poco húmedo.
Estoy conforme con la compra ya que lo que más buscaba era un reloj que me ayudara a darme una idea de cómo esta mi frecuencia cardíaca y oxigenación.
No vale la pena tirar su dinero en un device que no sirve. Nou hay apoyo por parte de soporte. Tengo 4 meses con el y ya no funciona, empezó a fallar demasiado desde los 2 meses.
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