Fitbit Flex 2 Fitness Tracker - Black

  • Model #: FB403BK-CAN
  • Web Code: 10481842
  • Release Date: 10-12-2016
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Sold and shipped by: Best Buy
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Discover an activity tracker that's as flexible as you are. The Fitbit Flex 2 tracks your activity 24/7, whether you're walking the dog or sprinting on the treadmill. Ultrathin, with a discreet LED display and waterproof design, this wristband can stay with you wherever you go. It automatically recognizes your activity and even tracks your sleep patterns.

More Information

We all have days like these. You got splashed by a puddle running late to work. The elevator was broken so you had to take the stairs several floors up. Work has you run off your feet because a colleague called in sick. When you get home, the dog is sitting patiently at the door with his leash in his mouth. You tickle his belly and resign yourself to the fact that you won't have time for the gym today.

And that's okay.

The Fitbit Flex 2 watches everything you do, whether you're slogging through your day-to-day or dominating a workout. It tracks your activity 24/7 and offers feedback so that even if you don't get a chance to step inside a gym, you'll have a record of the exercise you did get today.

Why you need this:

  • Tracks every step you take: The Flex 2 activity tracker records your steps, and distance travelled, and calculates the calories you burned throughout the day.
  • The activity tracker that never sleeps: At night, Flex 2 automatically measures and rates your quality of sleep and features a silent, vibrating alarm so as not to wake up your partner.
  • Training upgraded: SmartTrack automatically recognizes continuous movement, identifies the type of activity, and records it in the Fitbit app, delivering a comprehensive exercise summary.
  • Stay connected, hands-free: Sync with your smartphone to get incoming call and text notifications.
  • One charge, days of use: Enjoy 5 to 7 days battery life* from the rechargeable battery, and recharge your Fitbit via USB in just 2 to 3 hours.
  • Small and discreet: This ultra-thin removable tracker has a discreet colour-coded LED display hides in bands, bangles, and pendants so it won't cramp your style.
  • Don't be afraid to get wet: The Flex 2 is waterproof up to 100m so you can swim laps and train in the rain; you'll almost never have to take it off.
  • In sync with your digital life: Flex 2 syncs wirelessly and automatically with your compatible device via Bluetooth 4.0 technology, so you can view your custom dashboard online or while on the move through the Fitbit app.
  • Learn to eat, live, and sleep better: With the Fitbit Dashboard app, you can record your workouts, log food, see your progress, set your goals, set reminders to move, and share or compete with friends and family.

*Battery life and charge cycles vary with use, settings, and other factors; actual results will vary.

What's in the Box?

  • Flex 2 Fitness Tracker
  • Large/Small Black Band
  • Charging Cable
  • Wireless Sync Dongle
  • Free Fitbit Account


  • Parts - 1 Year(s)

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  • Power Type
    Battery Powered
  • Battery Type
  • Battery Life (Typical)
    5-7 d
  • Charging Time
    2-3 h
  • Charging Method
  • Other Features
  • Classification
  • Alarm
  • Designed for Sports & Fitness
  • Water Resistance
  • Dust Proof
  • Number of Physical Buttons
  • Eco-friendly
  • Additional Functions
    Swimproof up to 100m
  • Physical Features
  • Band Colour
  • Minimum Band Size (Circumference)
    140 mm
  • Maximum Band Size (Circumference)
    206 mm
  • Adjustable Band
  • Removable Band
  • Clasp Type
  • Width
    1.136 cm
  • Weight
    7.16 g
  • Display
  • Display Technology
  • Touchscreen
  • Connectivity
  • Bluetooth
    Bluetooth 4.0
  • USB (Data)
  • NFC Enabled
  • 3G
  • 4G LTE
  • Wireless Syncing
  • Activity Monitoring Features
  • Goal Setting
  • Calories Tracking
  • Distance Tracking
  • Steps Tracking
  • Elevation Tracking
  • Sleep Tracking
  • Monitoring Sports
  • Notifications & Controls
  • Incoming Calls
  • Missed Calls
  • Answering Calls
  • Smart Phone Battery Alert
  • Music Controls
  • Camera Control
  • Find My Phone
  • Voice Commands
  • Email
  • Calendar
  • SMS
  • Facebook
  • Twitter
  • Instagram
  • Google+
  • Weather
  • Silent Alarm
  • Vibration
  • Illuminated Alerts
  • Other Notifications
    Call; Text
  • Sensors
  • Number Of Sensors
  • Accelerometer
  • Ambient Light Sensor
  • Compass
  • Altimeter
  • Ambient Temperature
  • Barometer
  • GPS
  • Perspiration
  • Heart Rate
  • Compatibility
  • Web-based Application
  • Mac iOS Compatibility
    Yes - iPhone 4s and later; iPad 3 Gen and later
  • Android Compatibility
    Yes - Leading Android Devices
  • BlackBerry Compatibility
  • Windows Phone Compatibility
    Yes - Leading Windows Devices
  • Mac OS X Compatibility
    Yes - Mac OS X 10.6 and up
  • Windows PC Compatibility
    Yes - Windows Vista and later
  • Software/Apps
  • Compatible App Stores
    App Store; Google Play; Windows Store
  • Approximate Number of Apps Available
  • Power
  • Warranty Parts
    1 Year(s)



Customer Reviews

4.0 / 5
Based on 19 review(s) More about Customer Reviews

Ratings in Detail

  • 5
  • 4
  • 3
  • 2
  • 1

Positive vs. Critical Reviews

Positive 78%

15 Reviews

Critical 21%

4 Reviews

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  • from Kelowna, BC

Like the old Surge, disposable junk!

I used this device about 10 times over 13 months, it inexplicably stopped working? I had it in the charger when it started this fast blinking, all matter of encouragement would not wake it up, I tried everything suggested in the support found online. Like the old Surge, which band disintegrated after 7-8 months, Fitbit do not last, disposable junk after the warranty period. (they replaced the original Surge but it lasted a month less) I'm done with Fitbit!

  • from Mississauga, ON

Was Happy

Not the best design. The band caught on sweaters and jackets and fell off. Fortunately able to find it, not this time it is gone. Poor design, the way it clips in. Not sure I will replace even though it was very motivating.

  • from Winnipeg, MB

Tracker falls out of the bracelet

My partner and I both have the Flex 2. And we have both had the tracker fall out of the bracelet. I fortunately found my tracker but my partner has no idea where his fell out. We haven't even had them that long. I wouldn't buy one again.

  • from London, ON

Flex 2

I love it but I'm not too happy that on the 30th day of using it , it decided to quit on me. I couldn't get it to sync and the battery power was dying quite fast. It wouldn't connect to blue tooth on my phone. It is great for motivation but has it's problems recording workout intervals. Example, 350 calorie burns on eliptical only register sometimes 170 calories. I will try one more time.

  • from Regina, SK

Poor Design

I received my Flex 2 as a Christmas gift last year, and have now lost it due to the poor design. Two previous times the tracker has fallen out of the band and I was able to find it. This time it fell out and is gone. There needs to be a clip of some sort to hold the tracker in the band. I also would not purchase this for the swimming function- it has very poor accuracy. For a 1750m workout (no kick, drills, etc) it recorded 1300m.

  • from Victoria, BC

Love It

So much better than I was expecting, and oddly enough motivating. I am determined every day to all four lights and successfully complete my daily goals.

  • from Windsor, ON

Looks good and works

The product works really well. I like wearing it. It's comfortable.

  • from Ottawa, ON

Fitbit Flex2

Love this item.

  • from Arnprior

So far so good

Light, easy to use, I don't even notice that I am wearing it. I love the fact that is it is water resistant and can use it to swim with. So far I like my purchase and the features it has.

  • from Ontario

Fitbit Flex 2

After one week using the Fitbit Flex 2, I can say I'm happy with my purchase. It works well, has good battery life and functions as advertised. I'm a person who is self motivated. I like to set goals and check off those goals when I accomplish them. The Fitbit Flex 2 encourages me to do this. I also like the sleep tracker and am hoping that over time, I'll see an improvement in the amount and quality of sleep I'm getting. (By the way, I never rate anything as a 5....nothing is perfect, so 4 is high praise.)

  • from Langley, BC


Cannot download app to any of my devices. Have not been able to use it. Very frustrated and will be returning product.

  • from Halifax, NS

Wish I bought it sooner!

Love my fitbit- very accurate step count and encourages me to move! I love how sleek the black band is- doesn't look clunky and I can still wear my dainty bracelets with it. I appreciate the sleep tracking too- there's something about seeing patterns and graphs that really works for me.. I like the visual of how much I've exercised today vs the rest of the week. Also super fun to have challenges with friends that have fitbits- very encouraging and positive! Wish I bought this sooner- I love it and highly recommend :)

  • from Mississauga, ON

Fitbit Xmas gitf

I like the reviews on this flex 2 - I have the firbit One & love it. Got the fitbit HR new one for Xmas, but returned it is too big for me to wear, Im a hair stylist & it would get wet. I like that this one is waterproof, just right for me

  • from Welland ON

Love my new Fitbit Flex 2!

Love my new Fitbit.... an awesome feature that I love, is that it vibrates on your wrist to alert you that that a call is coming in! I also bought the silver bangle so that I can wear my fit bit dressier through the day! I love's stylish & looks like a great piece of jewellery !

  • from Halifax, NS

Love the new features!

FitBit has been a part of my life for two years now, and I absolutely love the new styles. I just picked up a Fitbit Flex 2 as a gift and am so impressed with the new features and sleek detailing. I might need to upgrade mine! :)

  • from Kapuskasing ON

fit bit flex 2

This is my third Fit Bit !

  • from Ottawa, ON

Love It

Love this fitbit. Goes through the shower and swimming with no problems. The interface with the phone and computer are great and easy to navigate. Not a huge fan of the fastener as it is hard to use initially but it is improving over time. Strongly recommend if you are looking for a fitbit that you dont need to worry about getting wet.

  • from Barrie, ON

I Love my Fitbit Flex 2

This product has really helped me in my goal for being healthy and for losing the extra weight I've been carrying. This tool gives you a nudge when you've been sitting too long so it's very motivating. It tracks my sleep, water intake and many other goals that you set for yourself. Sometimes you can't do it on your own and you need help! This is the right tool for the job!! I love the new sleek design. Thank you Fitbit 2

  • from Toronto

Love it

This is my first fitbit and I love it. I wanted something small and simple, I like that it doesn't have a screen, I wish it tracked heart rate but you get what you pay for. On top of tracking my steps and my sleep it can also be set as an alarm to vibrate at a set time. It also vibrates to alert you to texts and calls which is great because I keep my phone in my bag, and now I don't constantly have to check it. It's fairly comfortable. Still getting used to it and taking it off and on is still tricky. The first 2 nights I slept with it on I woke up and it felt very tight on my wrist but that hasn't happened since.

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