Smartwatch Fitbit Sense 2 FB521BKGB
Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Get help identifying stress and get the tools to better manage it. Learn more about your sleep and how to improve your rest with detailed nighttime tracking and a unique sleep profile. Track key heart-health indicators so you can make more informed wellness decisions. Plus Sense 2 is packed with advanced activity tracking and smartwatch features and includes six months of Fitbit Premium Membership. Fitbit is part of the Google family. Manage stress Identify stress events, then manage them in the moment. Sleep better Get insights into your night’s sleep plus guidance to improve. Tune in to your body Be proactive about trends & changes to your well-being. Enhance your exercise Make smarter decisions before, during & after your workout.
Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Get help identifying stress and get the tools to better manage it. Learn more about your sleep and how to improve your rest with detailed nighttime tracking and a unique sleep profile. Track key heart-health indicators so you can make more informed wellness decisions. Plus Sense 2 is packed with advanced activity tracking and smartwatch features and includes six months of Fitbit Premium Membership. Fitbit is part of the Google family. Manage stress Identify stress events, then manage them in the moment. Sleep better Get insights into your night’s sleep plus guidance to improve. Tune in to your body Be proactive about trends & changes to your well-being. Enhance your exercise Make smarter decisions before, during & after your workout.
Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Get help identifying stress and get the tools to better manage it. Learn more about your sleep and how to improve your rest with detailed nighttime tracking and a unique sleep profile. Track key heart-health indicators so you can make more informed wellness decisions. Plus Sense 2 is packed with advanced activity tracking and smartwatch features and includes six months of Fitbit Premium Membership. Fitbit is part of the Google family. Manage stress Identify stress events, then manage them in the moment. Sleep better Get insights into your night’s sleep plus guidance to improve. Tune in to your body Be proactive about trends & changes to your well-being. Enhance your exercise Make smarter decisions before, during & after your workout.
Meet Sense 2—the smartwatch designed to help you stress less, sleep better & live healthier. Get help identifying stress and get the tools to better manage it. Learn more about your sleep and how to improve your rest with detailed nighttime tracking and a unique sleep profile. Track key heart-health indicators so you can make more informed wellness decisions. Plus Sense 2 is packed with advanced activity tracking and smartwatch features and includes six months of Fitbit Premium Membership. Fitbit is part of the Google family. Manage stress Identify stress events, then manage them in the moment. Sleep better Get insights into your night’s sleep plus guidance to improve. Tune in to your body Be proactive about trends & changes to your well-being. Enhance your exercise Make smarter decisions before, during & after your workout.
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The lowest price for Smartwatch Fitbit Sense 2 FB521BKGB right now is $134.99 at eBay.com.au, compared across 3 retailers.
The all-time low was $99.00 on 14 Mar 2026 — today's price is 36% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 Oct 2026.
Last updated at 08/10/2026 17:56:14
Fitbit Sense 2 Fb521 Health And Fitness Smart Watch Gps Nfc Mint
Delivery $9.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Fitbit Sense 2 by Google – Smartwatch Women / Men – Fitness Watch with Built-in GPS and Phone Function – Fitness Tracking with Stress
Delivery between 13–17 Oct $41
Fitbit Sense 2 Smart Watch - Shadow Grey/Graphite
Delivery between 15–16 Oct $66.97
originally posted on johnlewis.com
Did you love the original sense? Well, you won't love sense 2, then. It lacks the ability to download the apps you loved, it can't send and receive calls as promised- and there are no legit plans or timelines to release this feature. It can't even track water. Do you love the consistency of your smartwatch- and not having to reset it to get it to link or send essential information to the app... EVERY MORNING!? Don't buy this watch. Every day I've owned it, I've had to reset it. Most mornings, it can't register spo2 from sleep. On other days it can't get the essential preloaded apps to work. You won't love this watch until Fitbit brings back all the features of Sense. Once they do that and fix all the interactivity issues, it will feel like an upgrade. Currently, it ... MoreDid you love the original sense? Well, you won't love sense 2, then. It lacks the ability to download the apps you loved, it can't send and receive calls as promised- and there are no legit plans or timelines to release this feature. It can't even track water. Do you love the consistency of your smartwatch- and not having to reset it to get it to link or send essential information to the app... EVERY MORNING!? Don't buy this watch. Every day I've owned it, I've had to reset it. Most mornings, it can't register spo2 from sleep. On other days it can't get the essential preloaded apps to work. You won't love this watch until Fitbit brings back all the features of Sense. Once they do that and fix all the interactivity issues, it will feel like an upgrade. Currently, it is definitely a downgrade. The continuous stress tracking doesn't make it worth it! Especially since you don't find out, you were stressed until 15 minutes or more after the event. By then, you're no longer stressed anyways!"
originally posted on bestbuy.ca
Following a procedure to get a pacemaker, it was suggested to me to get an Apple Watch to monitor for atrial fibrillation.Not wanting to spend $500+ on that, I went the cheaper option and bought the Sense, which just four months later, I very much regret.First and foremost the screen cracked from everyday use. It did not suffer any kind of notable impact, I just checked the time one day and found a crack. Read negative reviews of Fitbit and you will find that this is an all too common issue.I contacted Fitbit and received an insulting offer of 35% off a new one. Why would I want a discount to spend another penny on a product that cannot withstand everyday use?No thank you to a discount on a faulty product! I will not compound my bad decision to buy a Fitbit by ... MoreFollowing a procedure to get a pacemaker, it was suggested to me to get an Apple Watch to monitor for atrial fibrillation.Not wanting to spend $500+ on that, I went the cheaper option and bought the Sense, which just four months later, I very much regret.First and foremost the screen cracked from everyday use. It did not suffer any kind of notable impact, I just checked the time one day and found a crack. Read negative reviews of Fitbit and you will find that this is an all too common issue.I contacted Fitbit and received an insulting offer of 35% off a new one. Why would I want a discount to spend another penny on a product that cannot withstand everyday use?No thank you to a discount on a faulty product! I will not compound my bad decision to buy a Fitbit by buying another.Also, I did have episodes of a-fib which the device did record (albeit hours after the fact) but also registered my BPM as being as high as 170. My follow-up with my cardiologist showed the true number was in the 125 range, so the measurement was grossly exaggerated.While I realize a Fitbit won’t provide the same accuracy as a state-of-the-art monitor that a hospital has, what I did expect was that the screen would be more durable than to last a few weeks.I don’t know how good competitor’s smart watches are but I can tell you from experience that I will never buy Fitbit again.Heed the negative reviews! I wish I had.
originally posted on bestbuy.ca
I bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and ... MoreI bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and holds its value so you can gift/resell it...pick another brand. So very disappointing. Go ahead and Google fitbit sense stuck on logo.....it's very common, wish I knew but sadly I trusted the brand
| Water Resistance | Water resistant |
| Waterproof | Yes |
| Scratch Resistance | Corning® Gorilla® Glass 3 |
| Hardware Sensors | GPS, Skin temperature sensor |
| GPS | Yes |
Fitbit Sense 2 Fb521 Health And Fitness Smart Watch Gps Nfc Mint
Delivery $9.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Fitbit Sense 2 by Google – Smartwatch Women / Men – Fitness Watch with Built-in GPS and Phone Function – Fitness Tracking with Stress
Delivery between 13–17 Oct $41
Fitbit Sense 2 Smart Watch - Shadow Grey/Graphite
Delivery between 15–16 Oct $66.97
Did you love the original sense? Well, you won't love sense 2, then. It lacks the ability to download the apps you loved, it can't send and receive calls as promised- and there are no legit plans or timelines to release this feature. It can't even track water. Do you love the consistency of your smartwatch- and not having to reset it to get it to link or send essential information to the app... EVERY MORNING!? Don't buy this watch. Every day I've owned it, I've had to reset it. Most mornings, it can't register spo2 from sleep. On other days it can't get the essential preloaded apps to work. You won't love this watch until Fitbit brings back all the features of Sense. Once they do that and fix all the interactivity issues, it will feel like an upgrade. Currently, it ... MoreDid you love the original sense? Well, you won't love sense 2, then. It lacks the ability to download the apps you loved, it can't send and receive calls as promised- and there are no legit plans or timelines to release this feature. It can't even track water. Do you love the consistency of your smartwatch- and not having to reset it to get it to link or send essential information to the app... EVERY MORNING!? Don't buy this watch. Every day I've owned it, I've had to reset it. Most mornings, it can't register spo2 from sleep. On other days it can't get the essential preloaded apps to work. You won't love this watch until Fitbit brings back all the features of Sense. Once they do that and fix all the interactivity issues, it will feel like an upgrade. Currently, it is definitely a downgrade. The continuous stress tracking doesn't make it worth it! Especially since you don't find out, you were stressed until 15 minutes or more after the event. By then, you're no longer stressed anyways!"
Following a procedure to get a pacemaker, it was suggested to me to get an Apple Watch to monitor for atrial fibrillation.Not wanting to spend $500+ on that, I went the cheaper option and bought the Sense, which just four months later, I very much regret.First and foremost the screen cracked from everyday use. It did not suffer any kind of notable impact, I just checked the time one day and found a crack. Read negative reviews of Fitbit and you will find that this is an all too common issue.I contacted Fitbit and received an insulting offer of 35% off a new one. Why would I want a discount to spend another penny on a product that cannot withstand everyday use?No thank you to a discount on a faulty product! I will not compound my bad decision to buy a Fitbit by ... MoreFollowing a procedure to get a pacemaker, it was suggested to me to get an Apple Watch to monitor for atrial fibrillation.Not wanting to spend $500+ on that, I went the cheaper option and bought the Sense, which just four months later, I very much regret.First and foremost the screen cracked from everyday use. It did not suffer any kind of notable impact, I just checked the time one day and found a crack. Read negative reviews of Fitbit and you will find that this is an all too common issue.I contacted Fitbit and received an insulting offer of 35% off a new one. Why would I want a discount to spend another penny on a product that cannot withstand everyday use?No thank you to a discount on a faulty product! I will not compound my bad decision to buy a Fitbit by buying another.Also, I did have episodes of a-fib which the device did record (albeit hours after the fact) but also registered my BPM as being as high as 170. My follow-up with my cardiologist showed the true number was in the 125 range, so the measurement was grossly exaggerated.While I realize a Fitbit won’t provide the same accuracy as a state-of-the-art monitor that a hospital has, what I did expect was that the screen would be more durable than to last a few weeks.I don’t know how good competitor’s smart watches are but I can tell you from experience that I will never buy Fitbit again.Heed the negative reviews! I wish I had.
I bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and ... MoreI bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and holds its value so you can gift/resell it...pick another brand. So very disappointing. Go ahead and Google fitbit sense stuck on logo.....it's very common, wish I knew but sadly I trusted the brand
I bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and ... MoreI bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and holds its value so you can gift/resell it...pick another brand. So very disappointing. Go ahead and Google fitbit sense stuck on logo.....it's very common, wish I knew but sadly I trusted the brand
I bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and ... MoreI bought a fitbit sense and loved it. I bought it when it was brand new. First watch - the strap didn't clasp properly and would randomly fall off and screen cracked. Fitbit did replace it with a refurbished product....this product randomly won't go past the logo screen. It wasn't turned off, was functioning fine minutes before. Google tells me this is a common problem happening to fitbit se se since the summer of 2022 - but fitbit won't fix or replace watches with this common issue because it's outside of the warranty.So if you want a watch that will last approximately 2 years, develop issues that fitbit is aware of but won't admit or address....this watch is for you. If you want a fitness smart watch that lasts until you're ready to upgrade to new technology and holds its value so you can gift/resell it...pick another brand. So very disappointing. Go ahead and Google fitbit sense stuck on logo.....it's very common, wish I knew but sadly I trusted the brand
After using this watch for 2 weeks I'm actually really disappointed! This is definitely not a smartwatch, but instead it is a more exclusive fitbit tracker. For some stranger reasons fitbit decided to throw away a lot of good features from the previous sense like music, calender and some much more because this watch doest support any third part apps.. at all! They used to advertise thos watch as a smartwatch with "hundreds of apps" but when a lot of customer's critized them for it they changed the wording on the website because, NO it doesn't not have a hundred of apps, not even close.As a customer you may think that this watch would be an upgrade from the fitbit sense considering it's called fitbit sense 2 but NOPE it definitely isn't. It's more like a downgrade ... MoreAfter using this watch for 2 weeks I'm actually really disappointed! This is definitely not a smartwatch, but instead it is a more exclusive fitbit tracker. For some stranger reasons fitbit decided to throw away a lot of good features from the previous sense like music, calender and some much more because this watch doest support any third part apps.. at all! They used to advertise thos watch as a smartwatch with "hundreds of apps" but when a lot of customer's critized them for it they changed the wording on the website because, NO it doesn't not have a hundred of apps, not even close.As a customer you may think that this watch would be an upgrade from the fitbit sense considering it's called fitbit sense 2 but NOPE it definitely isn't. It's more like a downgrade then n upgrade, instead of having all the needed apps that you had on the fitbit sense they decided to take away a lot of stuff and just adding the eda scan that I (and I'm being really honest!) only used ONCE. So save your money and don't get this watch because you'll have more features in the fitbit sense then the sense 2. Oh and the Google voice assistent... it's gone and replaced with Alex which is only supported in English.It shouldn't even be called a "2" because it definitely isn't a upgrade of the former watch, its more like a downgrade!
I purchased the Fitbit Sense 2 for its health monitoring abilities and I must say I've been very impressed.The watch is unobtrusive and easy to wear with a slim profile. The 6 day battery life is a bonus having previously had a first gen Apple Watch that had to be charged everyday so you couldn't get a full 24hrs of health and sleep tracking.Yes it doesn't have all the bells and whistles of some more expensive smart watches, but it doesn't what it is designed to do well.The supporting Fitbit app is great, with a wealth of information at your fingertips. You get 6 months of the premium app with the watch, so I'll have to wait and see if I continue with it then.Overall a great health watch that is easy to use, comfortable to wear and a reasonable price.
I thought going from the Fitbit Sense to the Sense 2 would be an improvement, but it's actually a step backwards. Fitbit pay does no longer works but has been replaced by google pay, but it won't work on my sense 2 due bank security issues. Fitbit pay worked fine on my sense, so this is very annoying. Music well I can no longer have music on my Fitbit, which is really disappointing as i could save music on my sense and leave my phone at home, now if i want to listen to music i need to bring my phone. The other feature on music that has been removed is controlling music, the sense you could control music settings, even without downloading music to the sense, you cannot even do this now. The only positive feature i can think of is the haptic button has been replaced ... MoreI thought going from the Fitbit Sense to the Sense 2 would be an improvement, but it's actually a step backwards. Fitbit pay does no longer works but has been replaced by google pay, but it won't work on my sense 2 due bank security issues. Fitbit pay worked fine on my sense, so this is very annoying. Music well I can no longer have music on my Fitbit, which is really disappointing as i could save music on my sense and leave my phone at home, now if i want to listen to music i need to bring my phone. The other feature on music that has been removed is controlling music, the sense you could control music settings, even without downloading music to the sense, you cannot even do this now. The only positive feature i can think of is the haptic button has been replaced by an actual button, but that is i guess a personal preference. If you are thinking of upgrading from a sense, don't. If you are thinking of buying a Fitbit or upgrading from another model, the Sense is actually much better than the Sense 2.
I upgraded to sense 2 from a versa 3 and I have to say I love it. I loved it so much that I upgraded my husband's and bought him one too. It does everything I personally need from a fitness tracker. Battery life lasts 6 days most of the time but can be less if using your GPS. The ECG function is good and GPS worked well when I tested it on a 9-mile walk. I love the colours and the face is durable. The steps are accurate, as are the floor counting. I can take calls on my watch (once I linked it to sense 2 calls on Bluetooth) which is great as you never miss a call if you've left your phone in another room etc. I personally love the Fitbit app, and the way the calorie tracking and targets work. In 7 years of using Fitbit, I have only ever had a handful of issues with ... MoreI upgraded to sense 2 from a versa 3 and I have to say I love it. I loved it so much that I upgraded my husband's and bought him one too. It does everything I personally need from a fitness tracker. Battery life lasts 6 days most of the time but can be less if using your GPS. The ECG function is good and GPS worked well when I tested it on a 9-mile walk. I love the colours and the face is durable. The steps are accurate, as are the floor counting. I can take calls on my watch (once I linked it to sense 2 calls on Bluetooth) which is great as you never miss a call if you've left your phone in another room etc. I personally love the Fitbit app, and the way the calorie tracking and targets work. In 7 years of using Fitbit, I have only ever had a handful of issues with the app. For me, the Sense 2 is perfect for what I need.
aged 71 and conscious that my blood pressure is semi controlled by medication I decided this could be really useful. and indeed it is. I typically wear it from waking up till mid afternoon . In this time I walk and cycle so it records my heart rate and gives me insight into fat burn and cardio. An invaluable tool but it also allows me to be aware of messages and calls without having to open my secure pocket to use my phone. Having the 6 months free trial of the full app for 6 months shows everything it can give me access to, as well as telling the time. I am glad I made the purchase, and well worth the money. A two year guarantee gives me peace of mind. buying from John Lewis offered the best overall package.
| Water Resistance | Water resistant |
| Waterproof | Yes |
| Scratch Resistance | Corning® Gorilla® Glass 3 |
| Hardware Sensors | GPS, Skin temperature sensor |
| GPS | Yes |
