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

4.1 4.1 out of 5 stars 5,361 ratings

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Purchase options and add-ons

Brand Fitbit
Color Black
Product Dimensions 10"L x 0.45"W x 0.37"H
Item Weight 0.04 Pounds
Sensor Type Wearable

About this item

  • Brand New in box. The product ships with all relevant accessories

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Top Brand: Fitbit

Highly Rated
4.2/5 star rating from 100K+ customer ratings
Trending
100K+ orders for this brand in past 3 months
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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:
    4.1 4.1 out of 5 stars 5,361 ratings

Product guides and documents

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.

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Customer reviews

4.1 out of 5 stars
4.1 out of 5
5,361 global ratings

Customers say

Customers like the weight, water resistance, and size of the activity tracker. They mention that it's slim, and can be tucked in a shoe. They like that it offers multiple measurements, including the ability to track calories burned and heat rate. However, some customers dislike the battery life, and connectivity. Customers also disagree on quality and performance.

AI-generated from the text of customer reviews

294 customers mention207 positive87 negative

Customers like the tracking of the product. They mention it's slim, looks good, and tracks all their steps and exercises perfectly. They also manually track food and water intake, weight, and female cycles. One feature is the ability to track calories burned, display the remaining calories, and it blends with your attire. Customers find it easy to use and appreciate the convenient tracking for heat rate, sleep pattern, and exercise. The app is also great for tracking nutrition, weight, and other activities. However, some customers are disappointed that it does not track stairs climbed.

"...A very versatile fitness tracker. I love that its small and does not bother me to have on. The band is very durable...." Read more

"...It also has a way for women to track their cycles. It DOES NOT track stairs climbed (except to add steps toward your daily goal) and it does not..." Read more

"...I was upset when I found out it doesn't track flights of stairs...." Read more

"...Now you're ready to hit the pool, and the device will automatically recognize your swimming...." Read more

217 customers mention204 positive13 negative

Customers appreciate the water resistance of the biometric monitor. They mention that it can be worn during swims, in the shower, and on the beach. They also like the size and waterproof features.

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

"...PROS:Slim and minimalist designDurable bandWaterproof pebbleStrong, effective vibrations (alarms, notifications)..." Read more

"...It is waterproof, it only leaves my wrist to be charged so no issues with being out in the rain, pool or the shower...." Read more

"...Band is waterPROOF. I have not swam with this band yet but I have showered with it with no ill effects.Cons:..." Read more

215 customers mention179 positive36 negative

Customers generally like the size of the product. They mention that it's small, accurate, and has the smallest profile of any activity tracker they've seen. It works as advertised and offers multiple measurements for you from steps taken and can even set the pool length.

"...The thing I love about the Flex 2 is its size. It is so small!..." Read more

"...A very versatile fitness tracker. I love that its small and does not bother me to have on. The band is very durable...." Read more

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

"...measurement, I thought I would have to wear the large, but the small fits comfortably...." Read more

206 customers mention206 positive0 negative

Customers like the weight of the product. They say it's slim, unobtrusive, and lightweight. Some appreciate that the design has slimmed down, making it easier to wear on the wrist. The receiver can be put in a pocket. Overall, customers are satisfied with the weight and size of the device.

"...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...." Read more

"...PROS:Slim and minimalist designDurable bandWaterproof pebbleStrong, effective vibrations (alarms, notifications)..." Read more

"...The Flex 2 is noticeably slimmer and lighter than the original Flex...." Read more

"...It really is no imposition to wear, as it is very light and comfortable. The bands are generously sized. It comes with small and large size...." Read more

674 customers mention466 positive208 negative

Customers are mixed about the performance of the biometric monitor. Some mention it works well and is waterproof as well as pretty rugged, while others say it didn't work. Some say it's a good little device and was very helpful, while other say it doesn't do well picking up kick board effort.

"This was my first Fitbit device, and I am very pleased with its performance...." Read more

"...accurate to my step counts, easy to keep clean, love that I can wear in the pool. A very versatile fitness tracker...." Read more

"...a year and a half after I bought this item... and it's now broken and unusable...." Read more

"...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

339 customers mention119 positive220 negative

Customers are mixed about the quality of the biometric monitor. Some mention that they are sturdy little gadgets, reliable, and the alarm is perfect. However, others say that it always breaks after a few months, creates very flawed or misleading data, and only lasts about 5 days.

"...which I liked but have a fatal design flaw in that the band breaks after a few months. I have three main complaints: 1...." Read more

"...One of the main reasons for purchasing a Fitbit was for the silent alarms, as my alarm would annoy both my roommate and me in the mornings...." Read more

"...This concerns me that band breakage such as with the Fitbit1 may become a problem again." Read more

"...They all failed and died. Judging by the number of comments on my 1-star Amazon review of the Charge HR, this was a COMMON problem...." Read more

332 customers mention95 positive237 negative

Customers are dissatisfied with the battery life of the product. They mention that it's not good at all, it needs to be charged pretty frequently, and the low battery warnings only last about 2 seconds. Some say that the battery was defective and that they can't set their hourly activity reminders for the hours which they want without changing their timezone.

"...I have three main complaints: 1. the battery does not last very long, usually have to charge it twice a week my UP2 lasted about 10 days...." Read more

"...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 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

210 customers mention32 positive178 negative

Customers have connectivity issues with the Fitbit Flex 2. They say that it's difficult to sync with their phone, and the data syncing takes way longer. They also say that the device requires location services to be on to synced. Customers also say the device can interfere with Bluetooth pairing.

"...One other issue I have had happen twice it that it sudden had problems syncing and could not sync...." Read more

"...are dead from sweat/oil intrusion, battery failure, and connectivity failure. I have a graveyard of dead Fitbits in my office...." Read more

"...I have problems with getting it to sync to my phone at times...." Read more

"...Its syncing capabilities are horrible and it can’t calculate anything that is an anomaly...." Read more

Love it just a little upset
4 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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João Luiz Fontana de Figueiredo
4.0 out of 5 stars Excelente, porém...
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5.0 out of 5 stars I for one welcome our new robotic overlords!
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David V
5.0 out of 5 stars Buen monitor
Reviewed in Mexico on October 31, 2017
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5.0 out of 5 stars Casual fitness tracker
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