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Fitbit - Flex Wireless Activity and Sleep Tracker Wristband - Black

Price Match Guarantee

Best Buy is dedicated to always offering the best value to our customers. We will match the price, at the time of purchase, on a Price Match Guarantee product if you find the same item at a lower price at a Designated Major Online Retailer or at a local retail competitor's store.

Here's how:
  • If you find a qualifying lower price online, call 1-888-BEST BUY and direct a customer service agent to the web site with the lower price, or when visiting a Best Buy store, one of our employees will assist you.
  • On qualifying products, Best Buy will then verify the current price to complete the price match.

Some exclusions apply. See the list of Designated Major Online Retailers and full details.

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    Rating Breakdown

    (3,843 Reviews)
    (2,537 Reviews)
    (483 Reviews)
    (188 Reviews)
    (194 Reviews)

      Product Availability

      Special Offers

      Cardholder Offer

      What's Included

      • Fitbit Flex Wireless Activity and Sleep Tracker
      • Small and large wristbands
      • Charging cable
      • Wireless sync dongle
      • Owner's manual

      Ratings & Reviews

      Overall Customer Rating:
      91% of customers would recommend this product to a friend (6,606 out of 7,245)

      Rating Breakdown

      (3,843 Reviews)
      (2,537 Reviews)
      (483 Reviews)
      (188 Reviews)
      (194 Reviews)
      Fitbit Flex FB401BK Wireless Activity and Sleep Tracker Slate: Slim, stylish and always by your side. Track your activity throughout the day and monitor the quality of your sleep at night. LED lights on the device show you how your day is measuring up against your personal goals, motivating you to achieve a more active lifestyle.

      Product Features

      Get motivated with instant personal stats right on your wrist

      Accurately tracks steps taken, calories burned and distance traveled.

      Discover your sleep patterns

      Monitor how long and how well you sleep. Wake peacefully without disturbing your partner with the silent, vibrating alarm.

      Designed with comfort in mind

      Sleek and lightweight, this device is durable enough to withstand rain, the shower and your sweatiest workout, and comfortable enough to wear while you sleep.

      Set a goal and check your stats

      LED lights indicate your progress, each light representing 20% of your goal.

      See real-time progress by syncing wirelessly with smartphones, tablets and computers

      Automatically syncs with select through Bluetooth 4.0 with select devices, saving you the hassle of having to connect cords or manually enter data.

      Free online tools provide a network of support

      Monitor your progress online with a customizable dashboard equipped with tools, charts and graphs so you can visualize your progress.

      Challenge your friends for extra motivation

      Compete against and cheer on your friends and family. Compare stats and see how your progress measures up.

      Celebrate your progress

      Earn Fitbit badges for daily, weekly and even lifetime achievements.

      Get more from your favorite apps

      Automatically connects your data with popular health and fitness apps. Your device and selected apps work together to streamline your experience and help you reach your goals.

      Rechargeable battery

      Lithium-ion polymer battery can be charged with the included cable, which connects your device to your computer's USB drive.

      Product Q&A

      42 Questions & 359 Answers

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      Product images, including color, may differ from actual product appearance.