Fitbit Flex™ Wireless Activity + Sleep Wristband

Compatible devices for syncing

Android

  • Samsung Galaxy Mega, S5 Sport, S5 Active, S5, S4 Active, S4 Mini, S4, S3 Neo, S3 Slim, S3 Mini, S3, J, Rugby Pro, Ace Style, Core II, Core Advance, Core Lite, Grand Neo, Grand 2
  • Samsung Galaxy Tab Pro, Tab 4, Note Pro, 3 Neo, III, II, 10.1
  • Motorola Droid Mini, Ultra, MAXX, RAZR HD, RAZR HD MAXX, RAZR M
  • Motorola Moto E, Moto G (4.3 +), Moto X
  • HTC One M8, E8, Mini 2, MAX (4.3 +), MINI (4.3 +), M7 (4.3 +), Droid DNA (4.4.2), Evo 4G LTE (4.3 +), Desire 516, 610, 816
  • LG G3, Optimus Exceed 2, Volt, Optimus Fuel, F70, Optimus L35, Optimus L80, G2 Mini (4.4.2 +), Optimus L65, Optimus Zone 2, OPtimus L70, Optimus L90, Optimus L40, G Pro2, G Flex, G Pad (4.4.2 +), G2, Optimus G Pro (4.4.2 +), Optimus G (4.4.2 +), Vu 3.0
  • Sony XPERIA Z2, T2 Ultra, M2, E1, Z1 COMPACT (4.3 +), Z1S (4.3 +), Z1F (4.3 +), Z1 (4.3 +), Z (4.3 +), ZL (4.3 +), SP (4.3 +), ZR (4.3 +), Z ULTRA (4.3 +), T (4.3 +), TX (4.3 +), VL (4.3 +), V (4.3 +), AX (4.3 +), TABLET Z2, Z (4.3 +)
  • Google Nexus 4, 5 and 7 (2013)
  • Pantech Vega Iron 2, Vega Secret Note (4.3 +), Vega Secret Up (4.4.2+), LTE-A (4.4.2+)
  • Huawei Honor 3X (4.4.2+), Honor 3C (4.3 +), Honor 6, Ascend G6 (4.3 +), P7 (Sophia)

Apple

  • iPhone 5S, 5C, 5, 4S
  • iPod Touch (5th gen.)
  • iPad Air, iPad 4, iPad 3, iPad mini

Windows Phone

  • Nokia Lumia 520, 521, 525, 620, 625, 630, 635, 720, 820, 920, 925, 928, 930, Icon, 1020, 1320, 1520
  • HTC 8x

SEE MORE DETAILS ON DEVICES

HERE'S HOW IT WORKS:

1

TRACK YOUR ACTIVITY
AND YOUR SLEEP


Track steps, distance, calories burned, and sleep

2

SYNC YOUR STATS
WIRELESSLY


Flex automatically syncs your stats to your computer and select smartphones

3

SEE REAL-TIME PROGRESS


Get the full picture with free graphs, charts, and tools

4

MAKE FITNESS FUN


Set daily goals, earn badges, and challenge friends to get fit.

Set a goal and go

Flex allows you to set a goal and uses LED lights to show how you're stacking up. Each light represents 20% of your goal. You choose which one — steps, calories, or distance. It lights up like a scoreboard, challenging you to be more active day after day.

FLEX TRACKS:
  • Steps taken
  • Distance traveled
  • Calories burned
  • Active minutes
  • Hours slept
  • Quality of sleep

Powered by Fitbit's leading-edge accelerometer, Flex bases calculations like calories burned on your personal profile — reflecting your stats, not any average Joe's.

Lights indicate progress to goal

Visit store for accessory bands

SILENT ALARM
GENTLY
VIBRATES TO
WAKE YOU

Sleep

6 h 32 m

Sleep

Helps you get
your ZZZs

Flex never sleeps, even when you do. Continue to wear it all night and it’ll measure your sleep quality. Your dashboard will reveal how long you slept and the number of times you woke up to help you learn how to sleep more soundly. Flex also has a silent wake alarm that gently vibrates to wake you at your desired time, without disturbing your partner.

AT NIGHT, FLEX TRACKS: IN THE MORNING, IT:

HOW LONG AND HOW
WELL YOU SLEEP

WAKES YOU WITH
A SILENT ALARM

HOW MANY TIMES
YOU WAKE UP

WON’T BOTHER
YOUR PARTNER

Always by your side

Flex is your perfect companion. It fits comfortably around your wrist so you can wear it proudly all day and night.

  • easy to wear
  • water-resistant
  • with you
    all the time
  • reminds you
    to keep moving

Sync your stats. See your progress

Flex automatically syncs your data to PCs, Macs, many iOS devices and select Android phones without plugging in or pushing buttons. This gives you real-time access to your stats on the Fitbit dashboard throughout the day. Also with select NFC-enabled Android devices, you can tap your device to launch your Fitbit stats. It's like magic.

Wireless
Sync
BLUETOOTH
LOW ENERGY
Works with Mac OSX and Windows

Discover your trends

Flex comes with free online tools and a mobile app that allow you to set goals and follow your progress through awesome graphs and charts.

Log food, workouts and much more and get the inside scoop on your health. Knowing how close you are to reaching your goals gives you the motivation to reach them and aim higher.

WALKED TO
LUNCH WITH
FRIENDS

Track it all
in one awesome app.

Make the Most of Workouts
with MobileRun

Track runs & hikes

Use GPS from your phone to track key run and hike stats like place, time, splits and distance.

Map routes

View your routes and mile markers as you move, then scroll through your history and route maps.

Record workouts

Log workouts in seconds and see them appear instantly on your monthly exercise calendar.

VOICE CUES & MUSIC CONTROL

Get on-the-go pace and distance stats with voice cues, and control your music right from the app.

new!

Food tools that rule

Barcode scanner

Use your smartphone to scan food barcodes and instantly capture complete nutritional information.

Bigger database

Choose from 350,000+ foods in our credible database, including grocery brands and restaurant items.

Meal shortcuts

Log foods fast with meal shortcuts that automatically suggest the foods you usually pair together.

Calorie coaching

Use it with your Fitbit tracker to compare your calories in with calories out.

Stay motivated with
leaderboards, badges
and notifications.

Friends and family will keep you motivated. Stoke with competition by sending direct messages. A little friendly rivalry can be just the thing to keep you on your toes.

Daily steps
achievements
Lifetime distance
achievements
Daily climb
achievements
Stay motivated
with push
notifications
Earn
achievement
badges
Challenge
your friends
on the
leaderboard

Flexibility to
match your style

Flex tracker is flexible. You can take this tiny tracker out and put into any of Flex's colorful bands to fit your mood. Check out our accessory band colors and look good no matter what you're wearing.

Visit store for accessory bands

Plays well with
other apps

Weight trends can be influenced by a variety of fitness and nutrition factors. Fitbit works with several popular health apps that let you export your Fitbit data their way. Some, like Lose It!, also let you import their data into your Fitbit dashboard, so you can track your stats in either location. Learn more in our App Gallery.

LOSE IT!
RUN KEEPER
MAP MY FITNESS
MY FITNESS PAL
ENDOMONDO
SPARK PEOPLE

Select color

Fitbit Flex comes in multiple color options.
Additional colors available as accessory bands.

COLOR: violet
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