Fitbit Flex 2 Slim-Design Activity and Sleep Tracker

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Overview & Details

Fitbit Flex 2 Slim-Design Activity and Sleep Tracker
Stay fit and stay on track. By day, Fitbit tracks your steps, distance, calories burned and active minutes. Come nightfall, it tracks your sleep and even wakes you in the morning with silent, vibrating alarms. Log your goals with the Fitbit app, too. Fitbit keeps you motivated with alerts and badges and goes almost anywhere. Plus, it's swim-proof to 5 meters for worry-free wear in the rain or the pool. It's designed for accessories too, making it perfect for all-day wear.

What You Get

  • Fitbit Flex 2 wireless activity and sleep tracker with built-in rechargeable battery
  • Large wrist band
  • Small wrist band
  • Interchangeable clasp
  • Wireless sync dongle
  • USB charging cable
  • Manual
  • Manufacturer's 1-year limited warranty
Good to Know
Shop all Fitbit
Color Choices: Black, Lavender, Magenta and Navy
Measurements: Approx. 9"L x 1/2"W x 5/8"H
Fit: Small Band - Wrists measuring 5-1/2" to 6-3/4" Large Band - Wrists measuring 6-3/4" to 8-1/8"
Power Source: Built-in rechargeable lithium-polymer battery charges via included USB charging cable
Country of Origin: China

System Requirements

Mac System Requirements: Software - Mac OS 10.5 or later Internet Connection Hardware - USB port
PC System Requirements: Software - Windows XP, Vista, 7, 8 Internet Connection Hardware - USB port


All-day activity and workouts tracker 
  • Tracks steps taken, distance traveled, calories burned and active minutes
  • Easily record workouts, see real-time exercise stats and have summaries automatically appear on your Fitbit dashboard
  • Helps you take charge of your fitness and motivation 
Swim-Proof to 5 meters
  • Safe for your morning swim, a jog through sprinklers, washing your car or even just getting caught in the rain
  • Automatically recognizes select workouts and records them for you in the Fitbit app, giving you credit for your exercise, even if you forget to track it

Reminders to move
  • Keeps you on track with your hourly fitness goals by sending you reminders to move throughout the day
  • Friendly on-screen messages encourage you to reach mini-goals of 250 steps per hour and to celebrate them when you do

Automatic sleep tracker
  • Lets you review your sleep trends on the dashboard
  • Silent, vibrating alarm helps you wake more peacefully
Fitbit dashboard
  • View your progress and analyze trends with charts and graphs
  • Log workouts, view your monthly exercise calendar and use MobileRun to track stats and even map routes
  • Invite friends and family to share stats, provide motivation for each other and compete on the leaderboard
  • Log food with a barcode scanner, calorie estimator, meal shortcuts and expended food database
  • Get goal progress notifications and celebrate fitness milestones with earned badges
Smartphone notifications
  • Keeps you connected to everything that matters most by showing you texts, calls and calendar reminders on display
  • Alerts you with unique vibrations and color-coded lights
  • Available when your phone is nearby

Wireless sync
  • Automatically syncs your stats with your computer and more than 200 leading devices
  • Connect, share and compete with any friends you want, wherever you want
  • Works with iOS, Android and Windows

LED progress display
  • Tap your tracker to see how close you are to completing your daily step, calorie or distance goal
  • Display lights up in a unique color whenever you get calls, texts or reminders to move

Rechargeable battery
  • Charge lasts up to 5 days 
Designed for accessories
  • Designed with an ultra-thin removable tracker that gives you the benefits of advanced tracking without the look of technology
  • Whether you slip it in sleek bangles, hide it pendants or fit it in slim bands, it's easy to find a style that's right for any occasion
  • Comes with 2 of Fitbit's classic wristbands
  • Other bands available in leather and other materials (sold separately)
More Features
  • Sleek, comfortable design that's perfect for all-day and all-night wear
  • Use multiple Fitbit trackers on one account and switch between them


Fitbit Flex 2 Slim-Design Activity and Sleep Tracker

7 reviews 2.7 out of 5
5 Star
28.57% 2
4 Star
0% 0
3 Star
28.57% 2
2 Star
0% 0
1 Star
42.86% 3
Would recommend to a friend
  • making me Fit

    I am really happy with my Fit Bit. I choose the waterproof Fit Bit. I live in Florida and always in the water, so I wanna get credit for that on my steps. Well I do! This simple to use cute little wrist band has been my motivation. Still dealing with cancer and this is adjustable to my 2500 steps a day to anything you need it to be. Now my Fit Bit and I are up to 6000 step a day. It is getting healthy and back to my life.

    TheRealMellyMel1, FL
    Was this review helpful? Yes (8) No (0) Report if inappropriate
  • Fitbit Flex

    The fitbit flex is awesome. It was easy to set up and use. Charge it every other day. I love that it tracks my steps, I can log my water intake, weight, and food intake.

    Melanie1972, MO
    Was this review helpful? Yes (6) No (0) Report if inappropriate
  • Battery doesn't last anywhere near 5 days!

    I love how sleek it is. The app is very easy to set up and use. The notifications to move are great. It helps track your sleep and it's water proof. I love this Fitbit because it has really motivated me to start moving. The HUGE downside is the battery life. I'm having to charge it every 2-3 days! Very inconvenient because you have to charge for like 2 hours and since it's not moving it thinks you went to sleep and ruins the sleep tracking for that day. I bought two more for my girls but if I knew this before purchasing I might have looked into a different Fitbit that doesn't need to be charged so often.

    WestCoastPat, CA
    Was this review helpful? Yes (7) No (0) Report if inappropriate
  • Tracks what I want

    I like the slim design. I recommend it but buyer needs to be aware that it needs to be charged every 1 1/2 - 2 days which could be a "con" for some buyers.

    arubagirl217, FL
    Was this review helpful? Yes (10) No (0) Report if inappropriate
  • kim

    item does not work properly and will not charge. Being returned

    hijkdm8457, FL
    Was this review helpful? Yes (4) No (0) Report if inappropriate
  • I loved the idea of this thing

    I wish I could take a star away! I loved the idea of this, loved that it was swim proof and the sleep feature. It took a 45 minute call to the Fitbit company to get it to sync and update right out of the box. It seemed to be working like a dream for three days after. Night three, I synced and saw my step count then went to bed. Got up and about an hour later went to sync again and see about my sleep...lost over 600 steps from the day before and no sleep was tracked. Won't sync correctly now, says can't connect and as far as steps it's not keeping the right count. I'm hoping it was a fluke and tomorrow shows that the fluke has corrected itself. And of course, I thought all was well by day two and the out the box, receipt, return label and all. If not, I'd be returning this thing...to bad because I was dying for it!

    Jennann11, VA
    Was this review helpful? Yes (5) No (0) Report if inappropriate
  • Battery

    The battery life is not as stated, have to charge too much, fix this and you might have a product.

    CD08, NY
    Was this review helpful? Yes (18) No (3) Report if inappropriate