Skip to contentGo to Product SearchGo to Footer
Main Content

Customer Ratings & Reviews

No content
  • Front. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Angle. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Alt View 1. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Alt View 3. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Alt View 4. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Alt View 5. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Alt View 6. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.
  • Alt View 11. Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black.

Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black

Model:
FB401BK
SKU:
8390054
Highly rated by customers for:
Your price for this item is $31.99
Clearance
The comparable value price is $79.99

Customer reviews

Rating 4.4 out of 5 stars with 10464 reviews

Rating Filter

Pros mentioned filter

Cons mentioned filter

92%
would recommend
to a friend

Customers are saying

Customers are satisfied with the Flex Wireless Activity Tracker's sleep tracking, ease of use, and accurate step tracking capabilities. Many appreciate the long battery life, comfortable size and weight, and the motivational aspects of the device. While some users mentioned challenges with the charging mechanism, clasp, and price point, the positive feedback on core features outweighs these concerns. The water resistance and alarm features also received positive comments.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 480 Showing 9,581-9,600 of 10,464 reviews

  • Yay

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Helps to be active and do more in your life to stay healthy.

    This review is from Fitbit - Flex Wireless Activity and Sleep Wristband - Pink

    I would recommend this to a friend

  • Fitbit

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It works great bought it for my wife and she loves it

    This review is from Fitbit - Flex Wireless Activity Tracker - Red

    I would recommend this to a friend

  • Great

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Got onsale& love it!!!!!....definitely recommend !

    This review is from Fitbit - Flex Wireless Activity and Sleep Wristband - Pink

    I would recommend this to a friend

  • Love it!

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I enjoy improving my fitness with this great tool!

    I would recommend this to a friend

  • Beats a pedometer

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Nice unobtrusive device. I also got the scale to go with it!

    I would recommend this to a friend

  • put it on and forget it. best system ever.

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have worn it for a month And love it. I highly recommend it

    I would recommend this to a friend

  • Great for anyone trying to be healthy

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I love love love my fitbit; don't leave home with out it!!!!!

    I would recommend this to a friend

  • Awesome product

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Excellent product that performs just as promised. Very stylish

    I would recommend this to a friend

  • Great

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great. Amazing product that keeps you in check all day long!

    I would recommend this to a friend

  • Great for tracking calories burned, steps, sleep.

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product a person loves to workout this item is a must have.

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    I would recommend this to a friend

  • Great concept, product quality is questionable

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I usually don't buy extended warranties, but I'm glad I did with this purchase. XL bands should be more easily available. It took over a month to get mine.

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    I would recommend this to a friend

  • Great way to get fit

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Received for Christmas am excited to learn all the features

    This review is from Fitbit - Flex Wireless Activity and Sleep Wristband - Pink

    I would recommend this to a friend

  • Great at tracking all day activity.

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I find it great at keeping track and helps with my fitness system

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    I would recommend this to a friend

  • Great

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I love it,it works great!!!!!!I love you fit.thanks

    This review is from Fitbit - Flex Wireless Activity and Sleep Wristband - Pink

    I would recommend this to a friend

  • Great gift

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Got it for my mom for Mother's Day and she loved it!

    This review is from Fitbit - Flex Wireless Activity and Sleep Wristband - Pink

    I would recommend this to a friend

  • Doesn't track when biking & some walking

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Over all a good product - please work on the tracking issues

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    I would recommend this to a friend

  • Great for those of us who tend to loose clip ons

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It works well with my fitbit in correlating the calories used

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    I would recommend this to a friend

  • Fun way to stay fit

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like the Fitbit and use it daily. Skip the light green band.

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    I would recommend this to a friend

  • One of the best fitness tools i have found!

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a good fit for a busy lifestyle and very benefical.

    I would recommend this to a friend

  • Great for a step counter and sleep tracker

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Sometimes the motion is still recorded because of it being on the wrist. I would have thought for it being so expensive that it would have a step an altimeter included, but I guess small size doesn't allow that.

    This review is from Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Slate

    No, I would not recommend this to a friend
Page 480, Showing 9,581-9,600 of 10,464 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.