Search  for anything...
Fitbit

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)

  • Based on 1,427 reviews
Condition: New
Checking for the best price...
$235.16 Why this price?
Save $14.79 was $249.95

Buy Now, Pay Later

As low as $39.19 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Sep 24
Order within 18 hours and 8 minutes
Available payment plans shown during checkout

Recently Viewed

Color: Blue Mist/Pale Gold


Features

  • Learn to manage stress, sleep better and live healthier with Sense 2our 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
  • 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)

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 , 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.

Operating System: ios


Memory Storage Capacity: 4 GB


Special Feature: Sleep Monitor, Stress Monitor, Sleep Monitor, ECG, Oxymeter (SpO2), Heart Rate Monitor, GPS, Time Display, Notifications, Water Resistant See more


Battery Capacity: 162 Amp Hours


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Ion


GPS: Built-in GPS


Shape: Heart


Screen Size: 1.69 Inches


Product Dimensions ‏ : ‎ 1.57 x 0.47 x 1.57 inches; 1.3 ounces


Item model number ‏ : ‎ FB521GLBM-US


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Lithium Ion batteries required. (included)


Date First Available ‏ : ‎ September 23, 2022


Manufacturer ‏ : ‎ Fitbit Inc


Best Sellers Rank: #8,920 in Electronics (See Top 100 in Electronics) #289 in Smartwatches


#289 in Smartwatches:


Customer Reviews: 4.2 4.2 out of 5 stars 1,427 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Beautiful Tracker, Great Features, No Problems Using in the Pool
Color: Blue Mist/Pale Gold
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. Initially, I got about 5 days out of the first couple of charges. Now I'm getting about 3-4. I have no problem with that. I charge my phone more often so I don't know why I would expect more from my fitness device. How quickly the battery drains seems to be dependent on my level of activity. I just check every day to see how much it's drained so I don't get caught out with a dead battery. Haven't allowed it to go less than 20%. 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. ... show more
Reviewed in the United States on November 29, 2023 by ANNEE
    • Another great Fitbit (google) smart watch - not just a tracker
Color: Blue Mist/Pale Gold
Looking for a great smart watch? Try this one. I've had Fitbits for many years and love the brand/product, especially the Charge series. This was a gift for my no-tech wife. One of our sons recommended it. We thought that would be a problem, and it was. I love the product it has all the features of a tracker integrated with a smart watch. Software is solid. It was too much for her, so we traded it in for an Aspire 2. The Aspire is much better for her. Looking for a good smart watch that works with Google apps? Try this. If you're looking for a tracker, this is not for you. Pricing is good too, and it integrates with Android and Apple (ugh). Recommend you try it. ... show more
Reviewed in the United States on July 23, 2025 by HeartzinAZ
    • My Trusted Fitness Tracker Brand
Color: Blue Mist/Pale Gold
My fitness tracker brand of choice is definitely Fitbit. This my second Sense 2, following a previous original Sense. They do great until they reach a point where the battery won't hold a charge for a long enough time to be useful. The last one was starting to need re-charging every 2 1/2 days or less. When it used to go for a week between charges, that was just not getting it done. I was able to order this one during a sale, and it was less than I bought its predecessor on a PrimeDays sale, so they have come down in price. Set up was relatively easy to get connected to my cloud account and get the new one synced with my original data. The reason that I'm giving four stars instead of five is that there have been several times already when the tracker isn't staying in sync with the app on my phone. There is no particular reason why that should be happening, so I'm keeping an eye on it. I did purchase the extended warranty in case this one gives me trouble over its useful life. Brightness is good; the graphics seems even more vivid than I recall from the previous one. There seem to be more features automatically activated, which I may have to adjust, lest they drain the battery too quickly. Overall, I'm obviously a loyal Fitbit customer, and the Sense line works for my needs and interests. The hourly reminders to move are really helpful. ... show more
Reviewed in the United States on August 30, 2025 by SoCal Nana
    • Apple Watch
Color: Blue Mist/Pale Gold
The watch is perfect. The band makes my girlfriend break out.
Reviewed in the United States on September 2, 2025 by Gary P. Wass Jr.
    • Poor functioning. Irritating, unstoppable vibration.
Color: Blue Mist/Pale Gold
Lovely looking and comfortable. Quick charging. However, have had major problems with the Sense 2 and the support staff. The Sense 2 automatically sets activity zone based on your personal info; however, the vibration malfunctions and does not turn off. It will continue to vibrate while flashing zone minutes - like telling me that I am 386x over my zone goal. Almost every feature including vibration is turned off as well as all notifications, etc. However, every day, as soon as I'm active in house or walking, it vibrates, sometimes EVERY minute of zone completion. This is very irritating and upsetting especially when it sometimes continues to vibrate even when I'm resting. I bought it late Nov here on Amazon and have been working with support with countless phone calls and following their directions since Feb to resolve. They even sent me a refurb which did the same thing and has other issues. They won't refund my money since I bought through Amazon. They won't send a new one. And now, they won't send another refurb because it appears there is a defect of some sort and they are working on it. Since I have invested in wrist bands for the Sense 2 which can't be returned now and fit nothing else, I am just hanging, waiting to see if they will ever do something. I've gone back to wearing my Versa. Meanwhile, I have yet another case number. Each time you contact them, it's a different, difficult to understand tech who assigns another new case number. None of them are from the U.S. and one didn't even know our alphabet. I had gotten to a better English speaking supervisor who told me to work through her, but she hasn't responded since. Very frustrating. ... show more
Reviewed in the United States on April 28, 2025 by Belle

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...