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Fitbit Flex Wireless Activity + Sleep Wristband, Black, Small/Large
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Supported Application | Fitness Tracker, Alarm, Pedometer |
Brand | Fitbit |
Wireless Communication Standard | Bluetooth |
Color | Black |
Connectivity Technology | USB |
Operating System | Windows, Apple_iOS, Apple_iOS, Android, Windows, Android |
Human Interface Input | Touchscreen |
Water Resistance Level | Water Resistant |
Battery Life | 48 Hours |
Battery Cell Composition | Lithium Polymer |
About this item
- Rubber
- Made in USA or Imported
- One syncs automatically and wireless to tablets, computers and 150+ leading iOS, Android and Windows smartphones using Bluetooth 4.0 wireless technology. Syncing two computers requires Internet connection and USB port. Syncing to mobile devices requires Bluetooth and Internet connection. Syncing range: 20 feet. Call notifications via Bluetooth 4.0
- Water Resistance: Charge has been tested up to 1 ATM meaning it is sweat, rain and splash proof. However, the device is not swim proof. We also recommend taking charge off before showering because, as with any wearable device, it’s best for your skin if the band stays dry and clean
- Warning: Do not use if you have a pacemaker or other internal, or implanted medical device. Not intended for use by children under 13. Always consult your physician. Slippery when wet
- We recommend charging your device every few days to ensure you are always tracking. Charge time: One to two hours. Battery life: up to 7 - 10 days. Battery type: Lithium-polymer
- Syncs with Windows Vista and later, Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, and leading Android and Windows devices
- 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)
- 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
- 1 wristband which acts both as an Activity & Sleep wristband. There is no seperate Sleep wristband.
Frequently bought together
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Product Description
Product Description
Never stop moving with Fitbit Flex. Wear this slim, stylish device all the time and get the motivation you need to get out and be more active. It tracks steps, distance, and calories burned and shows you how you’re stacking up against your daily goals. At night, it tracks your sleep cycle, helps you learn how to sleep better, and wakes you silently in the morning. Access your stats anytime on your computer, tablet or from leading smartphones – both iPhone and Android. Flex is your perfect companion, it’s with you everywhere even in the shower. Plus, it looks good no matter what you’re wearing.
From the Manufacturer
• Certain features like Auto Sleep Tracking and SmartTrack may be disabled when using this accessory. Classic accessory bands are the recommended accessory for high intensity workouts and sleep tracking. • Do not wear the Flex 2 Pendant accessory while sleeping or during high intensity activity, as doing so could create a choking hazard. • Flex 2 Pendant accessories contain magnets. Magnets may interfere with pacemakers, defibrillators, or other medical devices. Consult your physician and the manufacturer of your medical device before using to determine if these accessories are safe for you. If the accessories may be interfering with your pacemaker, defibrillator, or other medical device, do not wear the accessories.
Buying Guide
Move it up: Since blood increases further up your arm, wear your tracker higher on your wrist to improve the heart rate signal during workouts. Start by moving the device up to three finger widths above your wrist bone, then experiment with slightly lower placement. Keep it secure: The less your tracker moves during exercise, the more chance you have of maintaining a heart rate signal throughout the activity. Do not wear the band too tightly, as this can restrict blood flow and goes against our wear and care guidelines. Hold steady for ten seconds: High intensity exercises or activities that cause you to keep your wrist bent (like push-ups) or move your arms vigorously (like dance) may interfere with heart rate signals. If you stop seeing a signal during these types of activities, hold your wrist steady for ten seconds during breaks to get your reading.
Manufacturer Contact Information
Customers contact: support@fitbit.com
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 0.6 x 0.38 x 8.2 inches; 4 Ounces
- Item model number : RZS-000-01
- Department : Unisex-adult
- Batteries : Lithium Metal batteries required. (included)
- Date First Available : March 11, 2013
- Manufacturer : Fitbit Inc
- ASIN : B00BGO0Q9O
- Best Sellers Rank: #88,141 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
- #120 in Heart Rate Monitors (Sports & Outdoors)
- #258 in Activity & Fitness Trackers
- Customer Reviews:
Product guides and documents
Compare with similar items
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Customer Rating | 4.0 out of 5 stars (24533) | 4.5 out of 5 stars (1375) | 3.9 out of 5 stars (16375) | 4.4 out of 5 stars (17151) | 4.0 out of 5 stars (2386) |
Price | $139.99$139.99 | $12.99$12.99 | $93.31$93.31 | $97.00$97.00 | $134.80$134.80 |
Sold By | TechStation | EPYSN | Amazon.com | Elect-deals | My Exclusive Cases |
Average Battery Life | 48 hours | — | 10.0 days | 5.0 days | — |
Battery Description | Rechargeable | — | Rechargeable | — | Lithium-Ion Polymer |
Brand Name | Fitbit | — | Fitbit | Fitbit | Fitbit |
Color | Black | — | Black | Black (Non-Heart Rate) | Silver/Plum |
Compatible Devices | Smartphone | — | Smartphone | Smartphone | Smartphones : smartphones|smart phones|android phones |
Item Dimensions | 0.6 x 0.38 x 8.2 inches | 5 x 3 x 0.7 inches | 6.8 x 0.83 x 0.35 inches | 1.18 x 3.94 x 8.94 inches | 9.45 x 0.59 x 0.41 inches |
Item Weight | 4.00 ounces | — | 0.80 ounces | 3.46 ounces | 1.12 ounces |
Material | elastomer | — | — | — | Stainless Steel |
Sensor Type | Wearable | — | Wearable | Wearable | Temperature |
Important information
Indications
• 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 Charge HR , Fitbit Blaze or Fitbit Surge , 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.
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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Reviewed in the United States on January 10, 2015
Top reviews from the United States
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The Fitbit Flex is very easy to set up. The app will walk you through syncing to your phone, setting up goals and connecting to friends. Once set up you can log steps counted (shocking for a pedometer, right), calorie burn from other exercise, food intake, water intake and sleep. It is comfortable to wear, the battery life is decent and frankly being able to work towards fitness targets is a great motivator so it keeps you accountable.
Where does the madness lie, I hear you ask. Challenges.
The in app challenges will turn normally quite sane friends and family members into step obsessed lunatics. They work by allowing you to invite your Fitbit friends to see who can get the most steps in a day, work week or weekend. During the challenge time you get updates on how you are doing verses the step totals of everyone else in the challenge. If your work buddy powers past you, you'll get a notification through the app. Should you are your sister in law be neck and neck you'll both get a message letting you know. If you are even a little bit competitive this can lead to mayhem.
Let's just say my wife and I are two people who don't like losing, especially to each other. I have found Mrs B. walking in tight circles in the kitchen while cooking, just to up that step count a little higher. I have been known to slip out of the house to get a quick walk around the block in, in an effort to make sure that she doesn't catch me. We've had reports of other family members watching TV while walking in place just to make sure they don't fall behind on a challenge.
Don't get me wrong, the challenges are a lot of fun and really help you get more steps in which is great for your physical health. It's just neighbors who have seen me aimlessly walking around our back yard while muttering about step counts have started avoiding me in the street.
2. I like the interface.
3. It's helped me lose weight and keeps me motivated.
Why 3 stars?
4. I bought it in August of 2016 and now, less than a year later, it's stopped working. I take very good care of it. It's never gotten wet or dropped. I don't overcharge it. For $7.50 a month it's a good deal given I've easily underspent my normal food buying because I use the fitbit, BUT I would have expected it to last more than 10 months.
Will I buy another? Yes because it helps me keep track of what I do each day.
But I think they should last longer than 10 months.
First two out of three of our Fitbits are bad,. Just pieces of crap. Then the last one goes dead. I contact you. Then a full month later you contact me through my review.
You send me a new one. But you don't bother to tell me you deleted my password.
So I request a new password over 150 times in four days. (I kept score.)
A week or so later you say your password link was broken.
You send me a password.
* User does not exist or password is incorrect.
You people are the worst I have ever heard of.
Are you able to count how many mistakes you made in that six months?
Even the Basis tracker is better than you and mine doesn't even keep time let alone count steps. Still better.
Older review:
I loved the Fitbit flex, much more than other activity watches and bands. I originally bought two, but my husband's stopped providing accurate information almost immediately and he switched to a Fitbit Force and he still loves it.
I was not so lucky. I liked the general information that it gave but after a few months, it just went dead.
I tried to contact the company through the website and never heard back.
This company is not ready for prime time. I liked the Fitbit fine for recording my activity, etc., but the support is in the Dark Ages.
I will purchase a buckle style wristband if I ever get this new Flex set up.
Top reviews from other countries


Mi band is one fifth the price of this crappy device

Tout allait bien jusqu'à ce que viennent des journées ou j'avais de la misère à atteindre mon objectif quotidien de 10 000 pas. Mon rythme de marche n'avais pas changé et mon trajet ne faisait que s'allonger de jour en jour. Je devais toujours marche plus pour obtenir le même résultat que la veille. Il y a des moment dans la journée ou la fiabilité était présente et d'autre fois non (batterie plein et à moitié chargée). J'ai joint des images du résulats d'un même trajet de 1.1 km, afin de vous donner une idée de quoi cela l'air.
Pour un 7.5 km, il arrive qu'elle m'indique seulement 5,5 km. Récement la montre commence aussi à me mettre en sommeil alors que je suis reveillée depuis plus de 5h00.
Bref, cette montre n'est pas fait pour les gens qui marchent rapidement (au-delà de 6km/h). Étant donné que le vendeur ne l'avait plus en stock, j'ai obtenu un remboursement plutôt qu'un échange.


Reviewed in Canada on August 9, 2018
Tout allait bien jusqu'à ce que viennent des journées ou j'avais de la misère à atteindre mon objectif quotidien de 10 000 pas. Mon rythme de marche n'avais pas changé et mon trajet ne faisait que s'allonger de jour en jour. Je devais toujours marche plus pour obtenir le même résultat que la veille. Il y a des moment dans la journée ou la fiabilité était présente et d'autre fois non (batterie plein et à moitié chargée). J'ai joint des images du résulats d'un même trajet de 1.1 km, afin de vous donner une idée de quoi cela l'air.
Pour un 7.5 km, il arrive qu'elle m'indique seulement 5,5 km. Récement la montre commence aussi à me mettre en sommeil alors que je suis reveillée depuis plus de 5h00.
Bref, cette montre n'est pas fait pour les gens qui marchent rapidement (au-delà de 6km/h). Étant donné que le vendeur ne l'avait plus en stock, j'ai obtenu un remboursement plutôt qu'un échange.



The activity tracker is precise but not impressed with the quality of the band.
It gradually started tearing on both the sides ,very fragile

Con: Strap is weak, therefore it looses one star.
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