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Fitbit Flex Wireless Activity & Sleep Wristband - Black

Regular $99.99
This product may not be eligible for some discounts. Learn More

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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 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 diameter
  • Large band: fits wrists from 6.3'' to 8.2'' in diameter
  • View a list of compatible Fitbit devices.
  • Model no. FB401BKK

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.


This product may not be eligible for some discounts. Please see the terms and conditions on the particular Kohl's offer for details. Kohl's Cash coupons and Kohl's Rewards certificates may still be earned and redeemed on this product. Learn More
Rated 3 out of 5 by A bit Disappointed Over all the Flex keeps me motivated to reach a step goal. However it is also not very accurate. If you're holding something that keeps your arm from swaying (your child's hand, a purse strap or bag, or pushing a cart for example) it doesn't catch all your steps. For the price I thought it would be more accurate, which is disappointing. Its pretty pricey for a step counter. However, I also am not fierce about every step every day being tracked and logged. If you are....the Flex is not for you. 01/22/2015
Rated 2 out of 5 by hasn't worked for most of the first month I received this as a gift for Christmas and it has only worked on and off for the first month that I've had it. I've tried all the fixes that I can think of and contacted the Fit Bit customer service but that hasn't produced any resolution to the problems. Too bad, I was really hoping that this would be a neat motivational tool. 01/22/2015
Rated 4 out of 5 by Easy to use It is easy to use but wish the reminders on batteries going out would be a little more evident. I typically find out because I got to tap it and see it doesn't work so lost a whole day and half of activity. For the price I would think there would be more bells and whistles instead of dots. However, it has held me accountable and is motivating. I also like that it ties in to Sparkpeople for my calorie tracking. Yes, I would recommend. 01/11/2015
Rated 5 out of 5 by Fitbit works great Love it that I can set an alarm to wake me up and am having fun challenging myself with the 10,000 step goal It's a fun fitness tool to get you moving. 01/19/2015
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