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Fitbit Flex Wireless Activity + Sleep Wristband, Black

by Fitbit
598 customer reviews
| 39 answered questions

Price: CDN$ 119.95 & FREE Shipping. Details
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11 new from CDN$ 109.39
  • Tracks steps, distance, calories burned and active minutes
  • Monitor how long and well you sleep
  • Wakes you (and not your partner) with a silent wake alarm
  • LED lights show how your day is stacking up against your goal
  • Slim, comfortable and easy to wear (includes large and small wristbands)

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Frequently Bought Together

  • Fitbit Flex Wireless Activity + Sleep Wristband, Black
  • +
  • 2 Charging Cables for Fitbit Flex Only (not for Fitbit One or other Models) Band Wireless Activity Bracelet Sport Wristband Fit Bit Flex Bracelet Sport Arm Band Armband Charge Charger USB Wire
Total price: CDN$ 123.64
Buy the selected items together

Product Details

Color Name: Black
  • Product Dimensions: 1.5 x 1 x 20.8 cm ; 9 g
  • Shipping Weight: 9 g
  • Item model number: FB401BK-CAN
  • ASIN: B00BSQ6734
  • Date first available at March 19 2013
  • Average Customer Review: 4.0 out of 5 stars  See all reviews (598 customer reviews)
  • Amazon Bestsellers Rank: #91 in Health & Personal Care (See Top 100 in Health & Personal Care)
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Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

Customer Reviews

4.0 out of 5 stars

Most helpful customer reviews

408 of 413 people found the following review helpful By PT Cruiser HALL OF FAMETOP 10 REVIEWER on April 23 2014
Color: Black
Update 7/3/14 - Fitbit just came out with a new upgrade to the Fitbit app for iPhones which adds a very cool GPS feature. I'm adding details down the end of this review.

I bought 3 of these fitbit flex devices, one for myself, my husband and my sister. Before purchasing I researched several wristband devices such as the Jawbone UP, the Nike Fuel and and the Polar Loop. I also looked at the fitbit force which is a newer version of this band. The lack of water resistance on the force was a deal breaker for me. I wanted to be able to wear this band 24/7 and to be able to wear it in the shower or when swimming. That was part of what made it attractive to me. Also, after reading reviews about the clasp problems on the force and how many people lost them, I wanted no part of that. They are also quite a bit bigger and look clunckier. The wristband on the UP looked like it would catch on everything and had no display at all. The Polar had lots of quality problems. I wasn't crazy about the looks of the Nike. The display is nice and I can see how people would like them, but not my style. The fitbit flex, to my tastes, had the coolest look. I also know a couple of people who own the fitbit flex and they were very enthusiastic about them so that influenced me as well.

So here is what I like about the flex: I like the way it looks on my wrist. All of us got the slate color. You can also order bands in a few different colors, both here and on the Fitbit site. It is lightweight and even though I don't often wear a watch I don't notice this on my wrist at all. The clasp was VERY difficult to secure the first couple of times until the rubber softened up a bit and until I got the hang of it. I secured it off of my wrist a couple times when it was new.
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177 of 184 people found the following review helpful By Alexander Inglis on June 23 2013
Color: Slate Verified Purchase
I am late 50s, office worker, pretty sedentary. I ordered the Fitbit because I hoped it would give me insight into how I burn calories, what I consume, and how I can be healthier managing both. But you can't do that without information ... and the wristband Fitbit silently tracks basic activities (walking, sleeping) that get logged to a Fitbit personal account. The input software for foods consumed is a bit fiddly but gets better after you create some custom foods (and since we tend to eat from the same basic of things, once entered they are easily plucked off the menu).

After two weeks, I can see exactly what I consume and how I can easily increase activity (without committing to gyms, etc): I am making a point of taking a brisk walk daily so that my daily calories burned are higher than consumed. I can track this easily on a PC, or Android tablet or smartphone. A big winner at such a small price!
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31 of 32 people found the following review helpful By Kristyn TOP 500 REVIEWER on Jan. 10 2015
Color: Tangerine Verified Purchase
I've been using my Fitbit (and the website program) for over two weeks now. It's not a ton of time, but I have to say that I am absolutely in love!

While I had a bit of difficulty figuring out the ins and outs of the product (there's no user-manual in the package; you have to go to the website and click through the product to learn about how to go to Sleep Mode, how to charge, how to install, etc), once I did figure it all out it's been a breeze and surprisingly motivating. Just the fact that it's on my wrist reminds me (and encourages me) to get moving; I find I WANT to hit my 10,000 step goal, I'm DRIVEN to get there no matter how tired I might be, not to mention that the website is fantastic for tracking your calorie-intake and -outtake to really get a concrete understanding of your success in your weight-loss regiment. I love that the website charts my daily stats, from steps and distance to weight and progress towards my goal, and I have been religiously tracking myself, feeling great pride when I'm told I've reached my goal :D

The Fitbit Flex also has a sleep mode. Before I bought it, a friend of mine told me it would wake me up before my next REM state so that I wouldn't wake up groggy. Fibit does not say this simply because it's not true; it was a misrepresentation by my friend. BUT! The Fitbit does track how long it takes to fall asleep and how many times you 'wake up' (or move about) during the night, and it gives you a 'sleep efficiency' percentage that is actually really helpful. I've been enjoying this feature more than I expected because it's showing me that my sleep efficiency is TERRIBLE!!! 55% on a good day! AH! But it makes sense to me because I'm always tired and usually need to be in bed for 10+ hours to feel rested...
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67 of 72 people found the following review helpful By Cybamuse TOP 500 REVIEWER on Jan. 21 2014
Color: Black
I came across this device and bought it without even reading a review. After reading loads of reviews, I did wonder if I'd made the right decision, but I think for what the device provides, it is almost the best out there (the Fitbit Force might be the closest to best for this type of device, but it's bigger so I am happy with the size of the Fitbit flex).

First and foremost, this device is not for those who want precise numbers - if you want to know precisely how many steps you walked, precisely how many calories you burned, will intuitively work no matter what type of exercise you are doing, then you will be disappointed. If, however, you are using this device in conjunction with something like myfitnesspal to keep track of calorie intake vs calorie burn, and have a better idea of how active you REALLY are, then this device is really good!

As far as the pedometer goes, it is on your wrist, not your hip, so it's recording your motion more by your arm swaying as you walk. Suddenly, you are conscious when you are walking and holding a bag in that hand because you fear the pedometer isn't picking up your steps...

*Motivates you - nothing like thinking, "Oh, I am only 2000 steps off doing 10,000 steps today to have met my goal of 10,000 steps" to actually do the steps! I found that my desk job meant at the end of the day I was not even getting in half of 10,000 steps per day, but with this device, I was reminded it might be better to get off at the station before my stop and walk home and get in those extra steps.
*The sync with myfitnesspal is a little buggy so has to be reset from time to time. But the synergy between the websites is good and really helpful.
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