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 477 Showing 9,521-9,540 of 10,464 reviews

  • Bought as gift

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

    Bought as gift for my 80 year old mother and she loves it

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

    I would recommend this to a friend

  • Works well

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

    Works well. This product does all the functions that I read about.

    I would recommend this to a friend

  • Awesome

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

    Best stuff ever! So happy about this product. Will buy more

    I would recommend this to a friend

  • Okay

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

    My husband Is not a huge jewelry person so wearing this is difficult for him because he is not used to wearing anything on his wrist. It does allow him to keep active which is nice. he wishes the battery lasted longer

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

    I would recommend this to a friend

  • Great health tracker

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

    Sleek, comfortable and user friendly health tracker

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

    I would recommend this to a friend

  • Amazing

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

    Awesome product, bought it as a gift and she loves it.!

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

    I would recommend this to a friend

  • Happy wife

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

    My wife loves the gamefication aspects Of the fit bit.

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

    I would recommend this to a friend

  • Just awesome

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

    I cant picture my life without it. Its a life changer.

    I would recommend this to a friend

  • Easy to use

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

    Enjoying every minute of it. Have learned a lot from it

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

    I would recommend this to a friend

  • great tracker

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

    It works great. No problem at all syncing with phone or computer.

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

    I would recommend this to a friend

  • Great product

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

    Great product! Provides awareness and makes it easy to set goals!

    I would recommend this to a friend

  • Great gift

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

    Bought this for my wife for Mother's Day and she loves it

    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'm a fan of Fitbit. They are the greatest trackers

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

    I would recommend this to a friend

  • Perfect

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

    Works great! Perfect gift for my daughter, she loves it.

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

    I would recommend this to a friend

  • Works great.

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

    Keeps me on track to exercise and what I ate. I like the sleep mode.

    I would recommend this to a friend

  • Accurate, great support app

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

    Bate try life just a few days before having to charge it overnight

    I would recommend this to a friend

  • Great monitor

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

    Help you achieve new goals, keeps you on track with current goals.

    I would recommend this to a friend

  • great

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

    love my fitbit ando got it with price match! great deal.

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

    I would recommend this to a friend

  • perfect gift idea for my niece.

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

    Was a gift for my niece. 18 years old . She loved it.

    I would recommend this to a friend

  • Great product

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

    The best basic steps product. Helps keep you on track.

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

    I would recommend this to a friend
Page 477, Showing 9,521-9,540 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.