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Deal.ai › Fitbit
Fitbit
Fitbit Sense 2 FB521 Smart Watch

Fitbit Sense 2 FB521 Smart Watch

4(743 ratings)

Best price now

$210.00at WalmartChecked 32 min ago

16% under what the other stores charge

Compared across 12 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $210.00 at Walmart (checked Nov 11, 2026).
  • Checked at 12 stores.

Our take on the Fitbit Sense 2 FB521 Smart Watch

The Fitbit Sense 2 is a health-focused smartwatch with continuous heart rate tracking, a pulse oximeter, skin temperature sensing and detailed sleep and stress tracking. Its standout feature is the always-on EDA sensor that watches for signs of stress and prompts breathing exercises, backed by a six-day battery and built-in GPS. It suits people who want wellness data and long battery life more than apps or a smart assistant. Reviewers rate the health tracking and comfort highly but criticize the loss of Google Assistant and third-party apps, and some find the interface and notifications limited next to an Apple Watch or Galaxy Watch.

Best forBuyers focused on sleep, stress and heart health dataAndroid and iPhone users who want multi-day battery lifePeople who prefer a light, comfortable tracker-style watchGolfers who want GPS distance tracking on the course
Pros
  • Continuous heart rate, SpO2 and skin temperature tracking
  • Always-on EDA sensor for stress detection and breathing sessions
  • Built-in GPS for runs, walks and golf distances
  • Up to six days of battery life
  • Light at about 0.85 oz and comfortable for sleep tracking
Cons
  • No Google Assistant or third-party app store on the watch
  • Limited smart features compared with Apple Watch and Galaxy Watch
  • Some health insights require a Fitbit Premium subscription
  • Notifications and on-watch interface feel basic
  • No ECG app in every region

Fitbit Sense 2 FB521 Smart Watch prices at every store

  • WalmartNew

    In stockSold by Dynamo Deals

    $210.00Free shippingChecked 32 min ago
    Visit Walmart
  • TargetNew

    In stock

    $249.95Free shippingChecked 32 min ago
    Visit Target
  • DellNew

    In stock

    $249.95Free shippingChecked 32 min ago
    Visit Dell
  • Google StoreNew

    In stock

    $249.95Free shippingChecked 32 min ago
    Visit Google Store
  • Best BuyNew

    Availability unknown

    $249.95Free shippingChecked 32 min ago
    Visit Best Buy
  • Fordham StoreNew

    Availability unknown

    $249.95Checked 32 min ago
    Visit Fordham Store
  • Macy'sNew

    Availability unknown

    $249.95Checked 32 min ago
    Visit Macy's
  • LenovoNew

    Availability unknown

    $249.95Checked 32 min ago
    Visit Lenovo
  • BrandsMart USANew

    Availability unknown

    $249.95Checked 32 min ago
    Visit BrandsMart USA
  • staples.comNew

    Availability unknown

    $249.95Checked 32 min ago
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  • Abt Electronics & AppliancesNew

    Availability unknown

    $249.95Checked 32 min ago
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  • Kohl'sNew

    Availability unknown

    $249.99Checked 32 min ago
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Also available at

  • Tech For LessCheck price at Tech For Less

Fitbit Sense 2 FB521 Smart Watch price history

Lowest price we've seen: $210.00 on Nov 11 at Walmart. Tracked across 12 stores since Nov 11.

What reviewers say

  • 4 / 5743 ratings

Owners praise the Sense 2 as a comfortable, long-lasting health tracker with strong sleep and stress data. Many are disappointed that it dropped Google Assistant and third-party apps, and some find the software less polished than rival smartwatches.

What people mention
  • Battery lifePraisedOwners say it lasts close to a week between charges with regular use.
  • Sleep trackingPraisedReviewers find sleep stages and sleep score detailed and useful.
  • Stress trackingMixedThe EDA sensor and breathing prompts are seen as helpful by some and gimmicky by others.
  • Smart featuresCriticisedReviewers miss Google Assistant and third-party apps that earlier Fitbit models offered.
  • ComfortPraisedThe light body and soft band make it easy to wear all day and overnight.
  • SoftwareMixedSome owners find the interface and notifications less polished than rival smartwatches.

About the Fitbit Sense 2 FB521 Smart Watch

The Fitbit Sense 2 is a smart watch with a built-in heart rate monitor and pulse oximeter sensor. It also has a sleep monitor. It tracks stress, sleep quality, heart rate, pace and distance traveled.

It connects by Bluetooth and has GPS. It shows push notifications and text messages, supports phone calls, and has a built-in speaker. Maximum battery run time is 144 hours.

Model
FB521BKGB-US
Product line
Sense 2
Type
Smart watch
Sensors
Heart rate monitor, pulse oximeter
Metrics
Stress, sleep quality, heart rate, pace, distance traveled
Connectivity
Bluetooth, GPS
Features
Speaker, push notifications, phone, text messaging, sleep monitor
Battery life
Up to 144 hours

Specifications

Actual Color
Silver
color
Silver
size
1

Questions and answers

Does the Fitbit Sense 2 have GPS?
Yes. It has built-in GPS, so you can track runs, walks and golf distances without carrying your phone.
How long does the battery last?
Fitbit rates it at up to six days, or 144 hours, per charge. Heavy GPS use shortens that.
Does it work with iPhone?
Yes. It pairs with both Android phones and iPhones through the Fitbit app.
Is a subscription required?
No. Core tracking works without one, but Fitbit Premium unlocks deeper sleep, stress and readiness insights.
Does it have Google Assistant?
No. The Sense 2 dropped the voice assistant and third-party apps found on the original Sense.
What is in the box?
The watch, a small and a large band, and a charging cable.
Where is the Fitbit Sense 2 FB521 Smart Watch cheapest?
At Walmart, for $210.00, 16% under what the other stores charge, as of our latest check.
What do buyers say about the Fitbit Sense 2 FB521 Smart Watch?
Rated 4 out of 5 from 743 ratings.
Where can I buy the Fitbit Sense 2 FB521 Smart Watch?
13 stores we checked sell it, including Walmart, Target, Best Buy, Dell, Google Store.

Stores we've priced the Fitbit Sense 2 FB521 Smart Watch at

  • Abt Electronics & Appliances deals and prices
  • Best Buy deals and prices
  • bkstr.com deals and prices
  • BrandsMart USA deals and prices
  • Dell deals and prices
  • Kohl's deals and prices
  • Lenovo deals and prices
  • Macy's deals and prices
  • staples.com deals and prices
  • Target deals and prices
  • Walmart deals and prices
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