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Fitbit Flex 2, Black (US Version), 1 Count

3.9 3.9 out of 5 stars 5,357 ratings
$119.99 with 8 percent savings $119.99 per Count
Typical price: $129.99
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Color: Black
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Purchase options and add-ons

Brand Fitbit
Material Elastomer, Stainless Steel
Color Black
Compatible Devices Smartphones, Tablets, Desktops
Team Name Fitbit
Product Dimensions 0.64"L x 0.35"W x 0.45"H
Item Weight 0.04 Pounds
Sensor Type Accelerometer
Battery Description Lithium-Ion
UPC 810351028888

About this item

  • Strap Material: elastomer interchangeable band, stainless steel clasp
  • Face Material: LED display with indicator lights
  • Pedometer: yes, tracks steps
  • Odometer: yes, tracks distance
  • Technical Features: 24/7 activity tracking, Smartphone notifications, Auto sleep tracker, SmartTrack: auto sport tracking, Movement reminders, Swimproof design
› See more product details

Frequently bought together

Fitbit Flex 2, Black (US Version), 1 Count
This item: Fitbit Flex 2, Black (US Version), 1 Count
$119.99 ($119.99/Count)
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EXMRAT Compatible with Fitbit Flex 2 Charger Cable (2Pack, 30cm/1ft), USB Charger Charging Cable for Fitbit Flex 2 (Black, 2P
$9.99 ($5.00/count)
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LEEFOX Compatible with Fit bit Flex 2 Band, Replacement for Flex 2 Accessories Silicon Wristbands w/Fastener Clasp Fitness St
$22.99
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Top Brand: Fitbit

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Product Description

Product Description

Meet the all-new Fitbit Flex 2—a slim, swim-proof fitness wristband that’s ready to go wherever life takes you. The ultra-thin, removable tracker hides in bands, bangles and pendants, so you can wear it in a way that’s all your own. Automatic all-day activity and sleep tracking show you how your entire day adds up, and SmartTrack automatic exercise recognition records your exercises for you. The discreet progress display uses color-coded LED lights to keep you connected to calls, texts and Reminders to Move. Plus you don’t have to worry about getting it wet—whether you’re swimming in the pool or running in the rain. It’s the next generation model of our most iconic tracker. No fuss, all fun, and fit for every you.

Manufacturer Contact Information

Customers contact: support@fitbit.com

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 10 x 0.45 x 0.37 inches; 0.64 ounces
  • Item model number ‏ : ‎ FB403BK
  • Department ‏ : ‎ womens
  • Batteries ‏ : ‎ 1 CR2 batteries required. (included)
  • Date First Available ‏ : ‎ August 16, 2016
  • Manufacturer ‏ : ‎ Fitbit Inc
  • ASIN ‏ : ‎ B01KH2PV4U
  • Customer Reviews:
    3.9 3.9 out of 5 stars 5,357 ratings

Product guides and documents

User Guide (PDF)

Important information

Directions

Keep it Clean: Regularly clean your band and wrist—especially after working out or sweating. Rinse the band with water or wipe it with a small amount of rubbing alcohol. Do NOT use hand soap, body soap, dish soap, hand sanitizers, cleaning wipes or household cleaners which could get trapped beneath the band and irritate skin. Always dry the band well before putting it back on. Keep it Dry: While Fitbit devices are water resistant*, it’s not good for your skin to wear a wet band for long periods of time. If your elastomer band gets wet—like after sweating or showering—rinse and dry it thoroughly before putting it back on your wrist. Be sure your skin is dry before you put your band back on. Don’t Wear It Too Tight: Make sure your band isn’t too tight. Wear the band loosely enough that it can move back and forth on your wrist. If you use Fitbit products with Purepulse Heart Rate tracking, for better heart rate readings during exercise, we suggest wearing the band so it’s secure, but not too tight, and wearing the band higher on your wrist (about 2-3 finger widths above your wrist bone). Lower the band on your wrist and loosen it after exercise. Give Your Wrist a Rest: Prolonged rubbing and pressure may irritate the skin, so give your wrist a break by removing the band for an hour after extended wear. Keep it Clean: Regularly clean your band and wrist—especially after working out or sweating. Rinse the band with water or wipe it with a small amount of rubbing alcohol. Do NOT use hand soap, body soap, dish soap, hand sanitizers, cleaning wipes or household cleaners which could get trapped beneath the band and irritate skin. Always dry the band well before putting it back on. Keep it Dry: While Fitbit devices are water resistant*, it’s not good for your skin to wear a wet band for long periods of time. If your elastomer band gets wet—like after sweating or showering—rinse and dry it thoroughly before putting it back on your wrist. Be sure your skin is dry before you put your band back on. Don’t Wear It Too Tight: Make sure your band isn’t too tight. Wear the band loosely enough that it can move back and forth on your wrist. If you use Fitbit products with Purepulse Heart Rate tracking, for better heart rate readings during exercise, we suggest wearing the band so it’s secure, but not too tight, and wearing the band higher on your wrist (about 2-3 finger widths above your wrist bone). Lower the band on your wrist and loosen it after exercise. Give Your Wrist a Rest: Prolonged rubbing and pressure may irritate the skin, so give your wrist a break by removing the band for an hour after extended wear.

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

3.9 out of 5 stars
5,357 global ratings

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Customers say

Customers find the product functional and small in size. They appreciate its functionality, waterproof feature, and ease of use. However, some customers have reported issues with the battery life, mentioning it needs frequent charging. Opinions vary on the sleep tracker, value for money, and durability.

AI-generated from the text of customer reviews

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FunctionalitySizeWaterproofEase of useSleep trackerValue for moneyDurabilityBattery life
769 customers mention "Functionality"577 positive192 negative

Customers appreciate the product's functionality. They find it works well with iPhone and Android devices, including the MyFitnessPal app. The text and call notifications work well, and the vibrating arm alarm is useful. Many consider it a good device if you don't need many bells and whistles. It never stops working, vibrates on the arm as an alarm, and stays on securely.

"...It worked great, better than hoped for. My first clue that this was a quantum improvement came after the first gym visit wearing the Fitbit2...." Read more

"...The device itself did seem to be functioning properly..." Read more

"...will accurately track your # of laps, I'm convinced that this one works flawlessly..." Read more

"...It's one of the few items I want to use...and it FAILS...." Read more

321 customers mention "Size"295 positive26 negative

Customers appreciate the slim and sleek design of the product. They find it unobtrusive, smaller than the previous Fitbit Flex or Fitbit One, and blends nicely with jewelry. Some like the minimal bracelet style, while others prefer the larger band for ankle wear. The lip on the metal clasps helps engage them securely with the band.

"...PROS: Slim and minimalist design Durable band Waterproof pebble Strong, effective vibrations (alarms, notifications)..." Read more

"...First the good: It is small and comfortable to wear, the band has enough adjustment to accomplish this...." Read more

"...The bands are generously sized. It comes with small and large size...." Read more

"...The new clasp is also made better as there are lips to keep the metal clasps engaged with the band, and it is a tighter clip as well...." Read more

306 customers mention "Waterproof"293 positive13 negative

Customers appreciate the waterproof design of the biometric monitor. They mention it's swim-proof, durable, and can be worn in the shower or pool. The swim feature is a nice addition and great for swimming laps.

"...The app is superb, the Fitbit is tiny, water resistant, and holds a good charge. The band is nice too...." Read more

"...GREAT for swimming laps. No need to wear a separate swimming watch. 3. Update process was smooth 4...." Read more

"...for swimmers who are considering this device since it's the only swim-able (or at least swim certified) Fitbit available...." Read more

"...PROS: Slim and minimalist design Durable band Waterproof pebble Strong, effective vibrations (alarms, notifications)..." Read more

249 customers mention "Ease of use"196 positive53 negative

Customers find the biometric monitor easy to use. They appreciate the simple setup process, straightforward app navigation, and clear lights that indicate progress. The clean interface is unobtrusive and helpful for setting daily goals.

"...of the pool (either flip turn or simply turning around) are very easy to distinguish, so the device accurately tracks your number of laps...." Read more

"...on my Iphone and I am happy with the reported information, ease of navigating w/in the ap and the layout on screen. The Rest:..." Read more

"...I like that it is simple but effective, and at a good price point...." Read more

"...Tracker syncing to the iPhone app is seamless. Setting it up was easy. 4) Tracks steps in real-time...." Read more

547 customers mention "Sleep tracker"338 positive209 negative

Customers have mixed opinions about the sleep tracker. Some find it useful and accurate for tracking sleep and exercise, while manually tracking food. The device accurately tracks number of laps. However, others mention issues like not tracking flights of stairs or deciding when you're asleep or awake instead of you telling it when you've gone to bed. It also picks up arm movement and hand movements as steps, which some find odd.

"...are very easy to distinguish, so the device accurately tracks your number of laps...." Read more

"...did get it to work, but when I woke up the next morning, my sleep had not been tracked and my step count from the previous days was still showing up..." Read more

"...The features I find the most useful, to be honest, are the sleep tracker, the alarm, and vibrating when I'm getting a call...." Read more

"...There are lots of features such as weight and food tracking (that I don't use) and these are probably useful for some...." Read more

305 customers mention "Value for money"210 positive95 negative

Customers have mixed opinions about the product's value for money. Some find it a good affordable way to track fitness, and great for its size and price. Others consider it a waste of money, saying it requires manual input and is not useful.

"...chose the Flex 2 for its slim profile, waterproof design, and lower price point...." Read more

"...I like that it is simple but effective, and at a good price point...." Read more

"...cart can all result in either a zero step count at worst or a serious under count...." Read more

"...This is my first time purchasing a Fitbit product and it was well worth the money...." Read more

276 customers mention "Durability"99 positive177 negative

Customers have different views on the product's durability. Some find it secure and easy to clean, with a strong clasp. Others report that the band breaks after a few months, fraying, or dies unknowingly.

"...I just wish it was more durable and that the bands were designed better to hold the unit in more securely. Fitbit has replaced this my unit twice...." Read more

"...Update process was smooth 4. Better appearance and stronger clasp. Cons:..." Read more

"...product that is shat out of Silicon Valley this is much more about hype that quality, ease of use, stability of tech and quality of service...." Read more

"...All in all I’m extremely annoyed that the thing dies so quickly, I would not purchase this again, however it does the job!" Read more

382 customers mention "Battery life"103 positive279 negative

Customers are unhappy with the battery life of the biometric monitor. They mention it needs to be charged frequently, which is a pain while traveling. The battery lasts only about 5 days, and the app shows a medium battery level as soon as it's 75% or lower.

"...1. Seems to last about 5 days between charges, old one was 7. That may change as I stabilize my usage pattern. 2...." Read more

"...the battery charge status then out of the blue you will see a Low battery warning...." Read more

"...The app is superb, the Fitbit is tiny, water resistant, and holds a good charge. The band is nice too...." Read more

"...my old Fitbits (all 8 of them) are dead from sweat/oil intrusion, battery failure, and connectivity failure...." Read more

Love it just a little upset
4 out of 5 stars
Love it just a little upset
I was really excited to get this for my birthday. I was upset when I found out it doesn't track flights of stairs. I haven't tried it out in the water yet I'm a little nervous it will get ruined because I have terrible luck. The clasps were so hard to switch between small and large bands. Honestly I think they should leave it in the large because I've never seen someone wear a small. Since my wrist isn't to big but isn't small enough to fit in a small, the extra clasp holes just move around and hang on my wrist which looks ridiculous. Maybe if they had a loop to hold the extra material in place it would look better. I have problems with getting it to sync to my phone at times. I know its not the phone alone because I have tried to do it with friends phones when theirs work perfectly. Most of the time it goes off saying I have a call but it was over an hour ago. At times fitbit.com has the updated information when the app does not which is a real bummer. I enjoy the challenges just got one a few minutes ago and it said I received it January 1st 1970. I have no clue what happened there at all!I really enjoy that I can go swimming with it. I hate running and jogging so swimming is how I burn most of my calories. With my Charge I would look up how many calories x amount of swimming would use and log it that way I knew roughly how much I was burning. Being able to automatically detect swimming is amazing and the main reason why I bought it! The tracker is very easy to put into the band. I'm slightly OCD so it takes me a few to get it the way I like it. It has to be right side up and the clasp has to be on the outer side of my wrist for personal preference. I love how small it is and the fact that the lights are not super bright and they do not turn on when you flick your wrists. With the charge I would always blind myself when I turned over in bed.Overall there are a few "minor" issues depending on your preference. Over all very good but I don't suggest switching to the Flex 2 unless you do a lot of swimming and make it worth it.
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Top reviews from the United States

  • Niki Z
    5.0 out of 5 stars Tiny, rugged, basic, and excellent!
    Reviewed in the United States on October 2, 2017
    Color: BlackVerified Purchase
    This summer my fiance requested a Fitbit. One night there was a sale too good to pass up, so I quickly did as much research as I could and weighed it with what my fiance wanted in a fitness band. I got her the Alta back in late June and she loved it! After having it for a week or two and really getting acquainted with it, she started showing me all the stuff it tracked in the app and I was seriously impressed. As a longtime Samsung Gear Fit user, I saw the Fitbit app blew the Gear Fit's out of the water. When I originally got my Gear Fit I wanted something that tracked my heart rate and steps but also could show me time, texts, and notifications from certain apps, as I missed wearing an actual watch, but wanted some tech too. While I still wanted a watch, I decided to get myself the smallest, cheapest Fitbit so I too could utilize the app, and I am thrilled with this little guy. So these days I still wear my Gear Fit on my watch arm and the Flex 2 on my other wrist. It works for me and I am very happy. The thing I love about the Flex 2 is its size. It is so small! My one main problem with the Gear Fit was that it was just a bit too big to sleep with on, as it would cause my arm to really fall asleep badly, so I could never utilize the sleep function of the watch. Even the Alta my fiance has is too big for her (causes the same problem on her as my Samsung does with me) but this Flex 2 poses no such problem with me, so I have been really happy that I can now track my sleep. It has given me some serious insight into how I spend my sleeping hours.

    Overall, I lover this thing! The app is superb, the Fitbit is tiny, water resistant, and holds a good charge. The band is nice too. The next smartwatch I get will be more aesthetically pleasing and less fitness based because I've got this little Flex 2 that tracks all the fitness type stuff I need.
    11 people found this helpful
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  • S. Marcus
    5.0 out of 5 stars Highly recommend for you swimmers!!! Of course for runners too!
    Reviewed in the United States on October 15, 2016
    Color: BlackVerified Purchase
    Ok, I am a longtime Fitbit user and was hoping the Fitbit2 would be a quantum improvement on an otherwise great product. After using it for a few weeks I can say that it certainly is.
    The core functions of the original Fitbit always served my running workout routine well. However I always wished I could use it in the pool. That said I was skeptical it would actually record my lap swim accurately. It worked great, better than hoped for. My first clue that this was a quantum improvement came after the first gym visit wearing the Fitbit2. It recognized that I was on a elliptical machine and recorded it promptly. For the swim, I set the pool length (finding how to do that was not easy though) and started in. I also set it to notify me when I passed my 45 minute first benchmark. I also used a watch and counter also to make things honest. At 45 minutes the band vibrated which I could feel in the water. After I found it had not only correctly timed the 1 hour swim, but had correctly calculated the distance and added to the Dashboard!! Wow, just what I needed!!
    I noticed a few concerns, but nothing that have kept me from being impressed. All and all, so far HIGHLY recommend.
    Pros:
    1. Does all the original Fitbit did in a smaller more secure package
    2. GREAT for swimming laps. No need to wear a separate swimming watch.
    3. Update process was smooth
    4. Better appearance and stronger clasp.

    Cons:
    1. Seems to last about 5 days between charges, old one was 7. That may change as I stabilize my usage pattern.
    2. Not simple to program swim mode. Seems simple after you figure it out but not immediately intuitive.
    3. The way the device inserts into the band requires bending the band. This concerns me that band breakage such as with the Fitbit1 may become a problem again.
    78 people found this helpful
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  • M. Juniper
    1.0 out of 5 stars are you willing to chance it? this piece of trash doesn't work for a lot of people!
    Reviewed in the United States on January 13, 2019
    Color: BlackVerified Purchase
    I am among the sizable minority of people for whom this Fitbit Flex 2 simply did not work. I had repeated problems trying to get it to sync to the app, and after literally hours of effort, was finally able to get it to work FOR ONE DAY. The next day it would not sync, and even following the same methods (and more!) that I had tried the day before did not fix the problem. The device itself did seem to be functioning properly (in that it delivered the appropriate feedback to indicate when I had achieved the first 2500 steps, the next 2500 steps, etc.). The problem is the ability of the device and the app to sync with each other.

    Here's what I tried to get this Fitbit Flex 2 to work:

    Uninstall and reinstall the app (close to a dozen times probably)
    Turn off Bluetooth and turn it back on (at least a half dozen times, probably more)
    Reboot the pebble using the charging cable (twice)
    Force stop the app (at least twice)
    Run through the steps in the app to sync it with the device (at least 2 dozen times)

    In running through the steps in the app to get this device to sync to the app, sometimes I got to the point where it said "We found your tracker!" and sometimes I didn't. I was only ever able to get it to pair twice. The first time it paired (apparently?) but wasn't showing any data in the app, and the second time I did get it to work, but when I woke up the next morning, my sleep had not been tracked and my step count from the previous days was still showing up for the current day, with a "sync error" type message. I was never able to get it to sync to the current day after that.

    My entire experience with this product has been extremely frustrating. I definitely want a fitness tracker, but my experience with this product has turned me off of Fitbit entirely.

    I am extremely disappointed, as I really liked the minimalist design of this tracker. I am returning it (of course). I wish I could also be compensated for the hours of my life I invested in trying to get this thing to work, and the amount of frustration I experienced in the process. I can't believe Fitbit has such a good reputation.

    DO NOT BUY!!! This item is a piece of trash.

    UPDATE: I purchased a no-name fitness tracker for one third the price of this one, and I am very happy with it. Setting it up and synching it to the app were both a breeze. Don't waste your time with this one. You can pay less and be a happier customer too.
    3 people found this helpful
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Top reviews from other countries

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  • João Luiz Fontana de Figueiredo
    4.0 out of 5 stars Excelente, porém...
    Reviewed in Brazil on January 9, 2019
    Color: BlackVerified Purchase
    Produto excelente, bonito, leve e ótimo para o dia a dia... O único defeito é que não notifica mensagens de texto do WhatsApp!
    Report
  • chainmailgoddess
    5.0 out of 5 stars I for one welcome our new robotic overlords!
    Reviewed in Canada on July 28, 2018
    Color: BlackVerified Purchase
    This little gizmo that will tell you to move when you're being lazy, and celebrates when you hit your step goal! It's simple, it doesn't have a watch because time is a silly wibbly wobbly ball of...stuff anyway, I like it. This is a lot of fun and has helped keep me from dying early from a sedentary lifestyle as a human battery powering the Matrix.
    Report
  • David V
    5.0 out of 5 stars Buen monitor
    Reviewed in Mexico on October 31, 2017
    Color: BlackVerified Purchase
    Me agrado bastante esta banda. Dudaba en adquirirla debido a que no tiene pantalla. Pero a favor tiene que es demasiado delgada y discreta y es a prueba de agua. La pantalla no la extranie ya que toda la informacion esta disponible en el celular mediante bluetooth.
    Report
  • Parth
    5.0 out of 5 stars Great product with very few flaws
    Reviewed in India on December 6, 2016
    Color: BlackVerified Purchase
    Reviewing after around 10 days of use

    Pros:
    Excellent tracking - Fitbit's algorithms are very accurate at tracking the distances and exercises even without having a GPS sensor built in
    Excellent app - love the infographics shown. it is one thing being able to track steps and another representing it beautifully in all the myriad ways that they do
    Very lightweight - get used to wearing it in just a few hours
    Swim-proof - have yet to go for a swim but was one of the major reasons for me buying it

    Cons:
    Battery - this is the biggest let down. for a device which doesn't have GPS or a screen, the 4-5 day battery life is a major let-down. The compact, lightweight form factor only partially makes up for this
    No clock - call me a tradionalist, but if I'm wearing something on my wrist, it should bloody well show the time
    No heart-rate monitor, GPS - while Fitbit's algorithms do a great job of calculating calories and distances, it is always good to have dedicated monitors for these. but then, this is the cheapest of the Fitbits
    Report
  • Elle Emme
    5.0 out of 5 stars Does exactly what it says it will.
    Reviewed in Australia on December 24, 2018
    Color: BlackVerified Purchase
    The Fitbit Flex 2 is great if you just need the basics; steps walked, distance covered, calories burned. The device, combined with the Fitbit app. assists with tracking water intake, food intake, can track how much weight you've lost, as well as having an exercise and sleep tracker. I find the ability to set vibration alarms is very handy, as I don't wake anyone else in the house if I don't wake up straight away to switch it off!

    The battery lasts a couple of days, and is quick to recharge. Connectivity is great, even with my old Samsung S5 phone.

    The band is completely adjustable and sits comfortably on your wrist, as a watch would. Great purchase!
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