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CES 2016 - Amazon Showcase CES 2016 - Amazon Showcase

Fitbit Flex Wireless Activity + Sleep Wristband, Black

from Fitbit
3.7 out of 5 stars 18,727 customer reviews
| 1000+ answered questions
About the Product
  • Rubber
  • Imported
  • 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 (sold with both large and small wristbands included with an interchangeable clasp)
  • Sync stats wirelessly and automatically to your computer and over 150 leading smartphones

Frequently Bought Together

  • Fitbit Flex Wireless Activity + Sleep Wristband, Black
  • +
  • SquareTrade 2-Year Personal Care Extended Protection Plan ($75-99.99)
Total price: $85.64
Buy the selected items together

Special Offers and Product Promotions

Color: Black | Size: Two wristbands 1 large and 1 small

Product Description

Color: Black | Size: Two wristbands 1 large and 1 small

Make fitness a lifestyle with Fitbit Flex—a slim, stylish device that tracks all-day activity like steps, distance, calories burned and active minutes. See how every day stacks up with LEDs that light up like a scoreboard as you get closer to your goal. Then wear it at night to measure your sleep quality and wake with a silent, vibrating alarm. Day or night, Flex fits comfortably around your wrist, is water-resistant, and has a 5-day battery life. It also syncs to computers and 150+ leading smartphones, so you can access your stats anywhere and see your progress in charts and graphs.


FREQUENTLY ASKED QUESTIONS

What mobile devices are supported for syncing?

The Fitbit Flex can sync directly to select iOS and Android devices. IOS: iPhone 4S, iPhone 5, 5S, 5C, 6, 6 plus, iPod Touch (5th gen.), iPad 3, iPad 4, iPad mini. Android: Samsung Galaxy Note 10.1, Samsung Galaxy Note II, Samsung Galaxy S III, Samsung Galaxy S4

How do I charge my flex?

Your tracker battery lasts for about 5 days. To charge it, remove the tracker from the band and place it in the charger until all 5 lights are solid.

If you are having trouble, your tracker's charging contacts may be obstructed by microscopic dirt or debris that prevents them from making a good connection to the charger. Use hand sanitizer and a tissue or dampen a cotton swab with rubbing alcohol and carefully clean the charging contacts on your tracker. Do not submerge your tracker in water or use abrasive cleaners. Thoroughly dry your tracker before attempting to charge. Be sure to fully seat your tracker into the charger, with the charging contacts fully inserted into the charging cable enclosure.

How do I reset my tracker?

lf your tracker is not responding, it may be fixed by restarting.

1. Plug your charging cable into the USB port and insert your tracker into the charging cable.
2. Insert a paperclip into the small pinhole on the back of the charger.
3. Press on the pinhole for 3-4 seconds.

Your Flex will now be reset. Take your tracker out of the charger and insert it back into the wristband.

Can the wristband irritate my skin?
The Flex wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. It does not contain latex. The clasp is made of surgical-grade stainless steel and contains traces of nickel. As with any type of jewelry, some people may experience allergies. Numerous factors can cause an allergy, such as a nickel sensitivity, reactions to bacteria that can accumulate in watch wristbands or other wearable devices, a reaction between the wristband and your soap or perspiration, or an allergy to the material of the wristband. If you notice any signs of skin irritation or experience any discomfort, please discontinue use.

Product Details

Color: Black | Size: Two wristbands 1 large and 1 small
Manual [PDF]|Product Warranty: For warranty information about this product, please click here. [PDF]
  • Product Dimensions: 0.6 x 0.4 x 8.2 inches
  • Shipping Weight: 4.8 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • Origin: China
  • ASIN: B00BGO0Q9O
  • UPC: 898628002649 797978636835 810351020295 603470069609
  • Item model number: FB401BK
  • Batteries 1 Lithium ion batteries required. (included)
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (18,727 customer reviews)
  • Amazon Best Sellers Rank: #50 in Health & Personal Care (See Top 100 in Health & Personal Care)
  • Product Warranty: For warranty information about this product, please click here. [PDF]

From the Manufacturer

Category Everyday Everyday Everyday Everyday Active Performance
Steps, calories, distance
Clock
Sleep quality & silent alarm
Floors climbed
Active minutes
Caller ID
Continuous heart rate
Music control & notifications
GPS tracking

Important Information

Legal Disclaimer
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 Reviews

Top Customer Reviews

Size: Two wristbands 1 large and 1 smallColor: Black Verified Purchase
Update 12/8/15 - Fitbit just added a new firmware update for the sleep timer feature. Once updated it's no longer necessary to tap the Fitbit before going to sleep or when waking it. It will now recognize when you're inactive and have gone to sleep. It also has some new goal setting software in the app relating to sleep to make it easier to focus on getting more (or less) sleep. The graphic interface is pretty nice. I'm looking forward to using this since I've become something of a night owl and could really stand to get on a better schedule. One more thing to like about my Fitbit.
The update took about 5 minutes using my iPad and plugging my Fitbit into its charger while it updated. The whole thing was simple. A red arrow on the dashboard, in the sync area alerted me to the upgrade. I really like this new feature.

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.
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Size: Two wristbands 1 large and 1 smallColor: Black
The Flex is fairly good - IF you understand its limitations. And it has a lot of them. This is a 1.0 version, the first wrist-based tracker Fitbit has produced. There are good reasons why there are so many negative reviews of the Flex. I strongly suggest that you wait for the technology to be refined by Fitbit (and others) before spending $100 or more on this.

I also suggest that you tune out the 5-star "this is AWESOME!" reviewers. I've had the Flex for 6 months now (acquired at CES 2013, long before retail availability) and initially I too was impressed by the technology. However, with long-term use, I think its inaccuracies make it nothing more than a pedometer with sleep analysis added in (and the usefulness of the latter is dubious as well). The IDEA of it all is excellent: to track your activities and see your progress over time via the great software that Fitbit has developed. However, all of this is predicated on the device accurately tracking your movements. If it fails in that aspect - and unfortunately it does, to a moderate degree - then all of the data and impressive charts and graphs are rather useless. The "awesome!" reviewers don't realize this (yet) and just assume what they're seeing is real; it isn't.

The underlying technological problem, as I see it, is in the placement of the tracker. Up until now, Fitbit trackers were to be placed on the torso. Now, it must be placed on the wrist (yes, the tracker itself can be taken out of the wristband and put into your pocket but all of Fitbit's calibrations and algorithms are designed for that wrist placement and you are making the problem worse by not having it on your wrist).
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Size: Two wristbands 1 large and 1 smallColor: Black Verified Purchase
Several asked my opinion of the Flex after I had compared UP to ONE last fall. I'm more pleased with Flex than expected. This review will be specifically for those comparing the Jawbone UP to the Fitbit Flex. For those interested in my review of the One and Jawbone UP it is located here: UP by Jawbone - Large Wristband - Retail Packaging - Onyx:
---------------------

UPDATE: I uploaded several head-to-head app screenshots.

UPDATE: I've found that I am storing quite a bit of water in the Flex band pouch where the module goes. Even though they say it's shower safe, I'm pretty sure some funky stuff is going to be growing in there in a matter of time... But the band is replaceable!

---------------------

My journey with personal monitoring devices/pedometers started a LONG time ago: Before Fitbit even existed, with a device called the SportBrain. It was a traditional belt clip style so old that it plugged into a base that used a dial in phone modem to upload the usage data to a server. It was old. But my interest in devices that can help monitor and tell me about my activity started then, and we seem to be now in a golden age of personal data monitoring devices. Fitbit Flex, Jawbone UP, all of the Fitbit clip devices and so many more...

Hardware itself

The biggest drawbacks I found on the Jawbone UP were that it had no visual feedback about your daily achievement toward your goal and the fact that it had no visual battery indicator. It wasn't a problem for me personally, but for those who are hardcore driven on a daily basis to compare and achieve this could be a drawback for you.
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Fitbit Flex Wireless Activity + Sleep Wristband, Black
This item: Fitbit Flex Wireless Activity + Sleep Wristband, Black
Price: $79.89
Ships from and sold by Amazon.com

Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.