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Fitbit

Fitbit Sense Advanced Smartwatch with Tools for Heart Health, Stress Management & Skin Temperature Trends, Carbon/Graphite, One Size (S & L Bands Included)

    • Based on 29,704 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, May 1
Order within 7 hours and 59 minutes
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Color: Carbon/Graphite


Features

  • EDA Scan app detects electrodermal activity which may indicate your body's response to stress and a built-in skin temperature sensor logs yours each night so you can see when it varies.Band Size : Small : Fits wrist 140mm - 180mm in circumference. Large : Fits wrist 180mm - 220mm in circumference
  • Assess your heart for atrial fibrillation a heart rhythm irregularity- and easily share results with your doctor (The Fitbit ECG app is only available in select countries. Not intended for use by people under 22 years old.Operating temperature: 14 to 113F
  • An on-wrist skin temperature sensor tracks yours each night so you can see how it varies. You can also see your nightly blood oxygen levels at a glance with our collection of clock faces.Maximum operating altitude: 28,000ft
  • High & low heart rate notifications alert you if yours seems above or below your average
  • Battery lasts 6 plus days plus, fast charging gives you a full days charge in just 12 minutes (Varies with use and other factors; up to 12 hours with continuous GPS)
  • Use built-in GPS during runs, hikes, rides and more to see pace & distance without your phone and use the built-in mic and speaker to take Bluetooth calls hands-free when your phone is nearby (Requires more frequent charging)

Description

Meet Fitbit Sense—the advanced smartwatch that helps you tune in to your body and guides you toward better health. Assess your heart for atrial fibrillation (Afib) with a compatible ECG app right on your wrist, track & manage stress, better understand your sleep quality and even keep an eye on patterns in your skin temperature. Plus, Sense unlocks a 6-month free trial of personalized guidance and advanced insights from Fitbit Premium for new users. Fitbit is part of the Google family. Requires use of Fitbit app with compatible iPhone or Android devices. A Google account will be required.

Operating System: android


Memory Storage Capacity: 6400 MB


Special Feature: Time Display, Alarm Clock,GPS,Notifications,Heart Rate Monitor,Sleep Monitor, ECG, Heart Rate Monitor, Stress Tracking See more


Connectivity Technology: Bluetooth, gps


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Ion


GPS: True


Shape: Heart


Screen Size: 1.58 Inches


Brand: Fitbit


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 1.59 x 1.59 x 0.49 inches; 1.1 ounces


Item model number ‏ : ‎ FB512BKBK


Department ‏ : ‎ Unisex-Adult


Batteries ‏ : ‎ 1 Lithium Polymer batteries required. (included)


Date First Available ‏ : ‎ August 25, 2020


Manufacturer ‏ : ‎ Fitbit Inc


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 1

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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Great health trending data/benefits.
Color: Carbon/Graphite
This is a great product. Great looking. Fits the wrists comfortably and seamlessly. Outstanding reliability. Mostly though, very impressed with the health data I receive when paired with my Apple phone. Step count, heart rate sleep patterns, etc. Having this data supports me in increasing my medical knowledge of my body and supports a creating a healthier lifestyle. I would highly recommend this watch. ... show more
Reviewed in the United States on April 12, 2025 by Charles J.
    • Great battery life, love the bright easy to read screen
Color: Carbon/Graphite
I am a long time Fitbit user. I upgraded from the Fitbit Charge 3 because I couldn't read the Charge 3 screen at all in the sunlight. The Fitbit Sense is easy to read even when it's sunny out. Great battery life & charges super fast. Sleep mode is very helpful. I really wish that you could fully read text messages & emails on the Sense. Also wish you could see your full reply when responding to someone via voice to text. Sense isn't useful/helpful when you have to use your phone to see full text messages, emails or your voice response to make sure there aren't any wrong words in your voice to text before sending. The purpose of those features are so you wouldn't have to rely on using your phone. Also, sometimes when you press on a notification Sense will occasionally clear other unopened notifications. It doesn't happen often but is frustrating when it does. In exercise mode I wish there was an option to see the current time in addition to elapsed time, distance, pace & heartrate all on the same screen. It would be helpful when doing 5k races or training for a race. I do like the current option of seeing those on separate screens too but would prefer the ease of seeing all on one screen. Golf mode has shut itself off a few times when I've used it. That's disappointing when you're trying to keep track of total play time & total steps specifically during the hours of playing golf. Wish I could get the "Golfpad" app on my Sense then I could use my Sense instead of the app on my phone. Also wish there were more free clocks similar to Spectrum that showed current time, date, steps, sleep & heartrate on one screen with a nice picture background that was easy to read. Overall I love the Fitbit Sense. I plan to try more of the other features such as music soon & hope I can listen while keeping the walking exercise mode running during a race without a problem. Hopefully I'll be able to switch back & forth quickly & easily. I bought the screen protector for my Sense & have been using it since. So glad I did as it's protected the screen many times from being bumped or accidentally dropped when trying to put it on. Wish Fitbit would sell the screen protectors. Would also like more color options for the sport bands including an all black band and breathing holes. The sport bands & Sense are very comfortable to wear even while sleeping. I recommend the sport brands if you play a lot of sports or are very active to ensure it stays on. I love the square face of the Sense. It's large enough & bright enough to read indoors & outdoors yet delicate looking for a small wrist. One last thing, wish Fitbit gave a better way to sign up for the extra extended coverage. The option popped up on the app on my phone but unfortunately while I was at work & didn't have the credit card on me I would have used to pay for the coverage. So unfortunately I didn't get a chance to sign up for that. The Sense is rather pricey so worth waiting until it's on sale. ... show more
Reviewed in the United States on September 17, 2021 by Deb H.
    • Nice watch with some minor flaws
Color: Carbon/Graphite
Overall I have liked the Sense watch. However, depending on what features are most important to you there are some annoying things. - Sleep Tracking: This was one feature I was really excited about. It does not work that well without intervention. The issue is that it never detects the correct times for sleep. For example, I may go to sleep at 11PM but the watch will log 3AM. The interesting thing is that if you go into the app and correct the sleep start and end times the information in the app will actually update correctly (as in heart rate, SpO2, etc). Starting sleep tracking from the app itself seemed to not really work at all. The few times I tried that option only basic information was collected. - Heart Rate Tracking: I have found this to be mostly accurate. Some online reviews have noted issues with the heart rate tracking. I have never really seen it be wildly inaccurate like some others. - Battery Life: I usually get 2 days or so and I wear it almost 24/7. I use the GPS when walking almost daily too which may impact the battery life some. - Mobile App: The app is OK. I can't really note any major issues - Hardware: The screen is bright enough for use in sunlight. The capacitive touch 'button' can be a bit difficult at times (as in not responsive) but it mostly works. - Other: There are occasionally some connectivity issues with Bluetooth that cause issues. For example the ECG feature just stopped working while other features had no issues. I read some troubleshooting forums and the suggestion was to turn off Bluetooth on the phone and turn it back on. That seemed to correct the issue while simply moving out of range of the phone (causing the Bluetooth connection to drop) did not. A few times it seemed that data sync was not working but a restart of the watch itself corrected that. Overall I have been pleased with the watch and now that I know workarounds for for the few issues that I have encountered it rarely gives me any issues. It has helped me get in better shape which was the goal. ... show more
Reviewed in the United States on March 2, 2022 by Joel M. Campbell

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