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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)

4.2 4.2 out of 5 stars 753 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Smartwatches by Fitbit

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Blue Mist/Pale Gold
Ask to set a workout timer, check the weather, control smart home devices, and more with this device.
Alexa Built-in Learn more

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


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)

The revolutionary smart ring.
Track your sleep, recovery, and health in style. Shop now.

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$246.00
Get it as soon as Monday, Mar 25
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From the manufacturer

Sense 2 copy over an image of a woman holding a phone
sense 2 watch on cream colored background

Shop the Fitbit Collection

Fitbit Sense 2

Sense 2

Fitbit Versa 4

Versa 4

Fitbit Charge 5

Charge 5

Fitbit Luxe

Luxe

Fitbit Inspire 3

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
Fitbit logo over top an image of a woman running

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
  • Customer Reviews:
    4.2 4.2 out of 5 stars 753 ratings

Product guides and documents

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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)
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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Price-18% $246.00
List:$299.95
-17% $249.95
List:$299.95
$199.95$199.00$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

Important information

Wattage

180 watts

Legal Disclaimer

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

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Customer reviews

4.2 out of 5 stars
4.2 out of 5
753 global ratings

Customers 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

10 customers mention10 positive0 negative

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

43 customers mention20 positive23 negative

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

34 customers mention21 positive13 negative

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

31 customers mention10 positive21 negative

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

23 customers mention11 positive12 negative

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

22 customers mention11 positive11 negative

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

8 customers mention3 positive5 negative

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

9 customers mention0 positive9 negative

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

Sense 2
5 Stars
Sense 2
I had a sense before I got a sense 2. Long story short my sense apparently took a crap and I wanted a new watch because I loved my sense watch. I was sad. I got the sense 2 and I'm loving it just like I did with my sense. 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.
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Top reviews from the United States

Reviewed in the United States on November 29, 2023
Color: Blue Mist/Pale GoldVerified Purchase
10 people found this helpful
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Reviewed in the United States on September 17, 2023
Color: Blue Mist/Pale GoldVerified Purchase
11 people found this helpful
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Reviewed in the United States on January 18, 2024
Color: Blue Mist/Pale GoldVerified Purchase
3 people found this helpful
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Reviewed in the United States on March 30, 2023
Color: Blue Mist/Pale GoldVerified Purchase
31 people found this helpful
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Reviewed in the United States on September 21, 2023
Color: Blue Mist/Pale GoldVerified Purchase
17 people found this helpful
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Top reviews from other countries

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Jeff Wilson
5.0 out of 5 stars Great comunication device
Reviewed in Australia on December 18, 2023
Color: Blue Mist/Pale GoldVerified Purchase
Customer image
Jeff Wilson
5.0 out of 5 stars Great comunication device
Reviewed in Australia on December 18, 2023
This is a great product. We are very familiar with it, and it works smoothly with the existing Fitbit app on our phones.
Images in this review
Customer image
Customer image
Amazon Customer
4.0 out of 5 stars fitness
Reviewed in Australia on March 3, 2024
Color: Blue Mist/Pale GoldVerified Purchase
Dan
4.0 out of 5 stars Buena compra
Reviewed in Mexico on July 31, 2023
Color: Blue Mist/Pale GoldVerified Purchase
Customer image
Dan
4.0 out of 5 stars Buena compra
Reviewed in Mexico on July 31, 2023
La pantalla se ve muy bien, el diseño es bonito y si dura una semana la pila (también carga rápido).

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.
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Customer image
One person found this helpful
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Tay
1.0 out of 5 stars Pésimo reloj
Reviewed in Mexico on March 10, 2023
Color: Blue Mist/Pale GoldVerified Purchase
2 people found this helpful
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Salomon
3.0 out of 5 stars Ciertas funciones no sirven en mexico
Reviewed in Mexico on September 30, 2023
Color: Blue Mist/Pale GoldVerified Purchase

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