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Fitbit Flex Wireless Activity & Sleep Wristband - Slate

Regular $99.99
This product is not eligible for promotional offers and coupons. However, you are able to earn and redeem Kohl's Cash and YES2YOU Rewards on this product.

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You can only purchase 2 of this item. Please select a lower amount and try again.
You can only purchase 2 of this item. Please select a lower amount and try again.
Available to Ship

Track your day, track your night! This slim, stylish Fitbit Flex wireless activity tracker and sleep wristband motivates you by offering a total fitness picture.


Limit 2 per household.


Find the right Fitbit tracker for you. View our comparison chart here.


Product Features:

  • Flex tracks steps, distance, calories burned and active minutes, showing progress with LED lights.
  • Device monitors your sleep and wakes you with a silent, vibrating alarm.
  • Set goals, view progress and earn badges as encouragement.
  • Rain-, splash- and sweat-proof device ensures durability.
  • Rechargeable battery lasts up to 5 days on a full charge.
  • Bluetooth 4.0 automatically syncs data to your computer or other device.

What's Included:

  • Flex tracker with wireless sync dongle
  • One small & one large wristband
  • Charging cable
  • Free Fitbit.com membership & app

Product Care:

  • Manufacturer's 1-year limited warranty

Product Details:

  • Overall: 3''H x 3.75''W x .5''D
  • Small band: fits wrists from 5.5'' to 6.9'' in circumference
  • Large band: fits wrists from 6.3'' to 8.2'' in circumference
  • View a list of compatible Fitbit devices.
  • Model no. FB401SLK
  Bluetooth Compatibility Chart
  Version: Compatible With:
  Bluetooth Smart Ready* Bluetooth Smart Ready
Bluetooth Smart
  Bluetooth* Bluetooth Smart Ready
  Bluetooth Smart Bluetooth Smart Ready NA NA
*This Bluetooth version is backwards compatible.

Our hassle-free return policy means worry-free shopping.

  • Return any item, anytime, for any reason.
  • No receipt? No problem. We'll take care of you.
  • Yes, you can return it in store (even if you bought it online!).

View our full return policy here.


Rated 5 out of 5 by This product is a must for everyone! I love this product. Everyone in my family has one and we compete on how far each one walks everyday. My mom had a heart attack 4 years ago and I bought her one to encourage her to walk and challenge herself to try to go a little further each day. So far it's working, she's lost weight and continues to increase her steps everyday. She is 76 years old and still works. I think this product helps to keep all of us a little more fit because we challenge ourselves as much as we challenge each other. 09/05/2015
Rated 5 out of 5 by Love my fit bit I've had my fit bit flex on for several weeks and love it. It definitely encourages you to think about moving more so you can get to your goal. The silent alarm definitely works. I don't agree with the sleep reports because it doesn't tell you if you're getting good REM sleep it just lets you know you're not moving at night so it counts you as asleep. It says it is water proof but I don't shower with it on and haven't tried swimming with it yet. As long as you keep the "background sync'ing" off and manually sync it when you want to you will save a lot on the battery. I only have to plug mine in once a week/ every 9-10 days sometimes. 05/27/2014
Rated 4 out of 5 by Does not have a clock or screen to see info quick I had the regular fitbit that you clip onto your clothes but when I saw that this one was waterproof and looked like a watch -I got it--BUT it does not have a clock (why would I want to wear something on my wrist all day AND ALSO a watch) this particular tracker also LACKS the stairs climbed feature that the older one had AND you cant see the information on this one with the touch of a button like the older one--this one only has the little lights to let you know how close you are to the steps goal ...Im going to wait until they come out with a new one with a clock/waterproof/stairs climbed feature...but it does work very well if you dont care about the things I mentioned 06/16/2014
Rated 5 out of 5 by Love my Fit Bit! I would recommend this product to everyone!....great value for the money, keeps me more on track with my exercise & diet. Very easy to use, goes quite a few days on a recharge. 08/04/2015
  • 2015-10-04T01:23:03.432-05:00
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