Fitbit FLEX Wireless Activity & Sleep Wristband (Blue)

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Fitbit FLEX Wireless Activity & Sleep Wristband (Blue)



Never stop moving with Fitbit FLEX.
This slim, stylish device is with you all the time. During the day, it tracks steps, distance, and calories burned. At night, it tracks your sleep quality and wakes you silently in the morning. Just check out the lights to see how you stack up against your personal goal. It’s the motivation you need to get out and be more active.

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 is powered by Fitbit’s leading-edge accelerometer, Flex bases calculations like calories burned on your personal profile – reflecting your personal stats! The Flex tracks:

  ✿   Steps taken
  ✿   Distance travelled
  ✿   Calories burned
  ✿   Active minutes
  ✿   Hours slept
  ✿   Quality of sleep

Helps you get your Zzz’s
Flex never sleeps, even when you do. Continue to wear it all night and it will measure your sleep quality. Your dashboard will reveal how long you slept and the number of times you work 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.

Fitbit FLEX is 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!
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.

Wireless Sync
Connect to any computer with Fitbit’s wireless sync dongle (included). Sync occurs automatically when your tracker sits within 20 feet of a dongle.

Bluetooth Low Energy
Fitbit’s trackers are the first all day activity trackers to offer Bluetooth Low Energy connectivity, delivering real-time stats without sapping your phones battery. Flex will syncs without you doing a thing.

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.

Badges galore
We’ll sing you’re praised and keep you motivated with Fitbit badge for daily, weekly, even lifetime achievements. Each time you achieve a new goal, or ‘wow’ us with your performance, we’ll award you with a badge. But you’ll have to work for it. E.g. Lifetime achievements and daily step achievements! You will also receive achievement alerts and weekly stats emails!

Share and compete with friends!
Challenge and compete with friends and family on In addition to rooting for one another, you can compare stats and see how your progress stacks up. Your leader board now refreshes all day long, so you’ll always know how you stack up against friends, no matter the time.

FLEXibility to match your style
Flex tracker is flexible. You can take this tiny tracker out and put into any of Flex’s colourful bands to fit your mood. Check out our accessory band colours and look good no matter what you are wearing!

Play well with other apps
Weight trends can be influences 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. Apps include Run Keeper, Map my fitness, My Fitness Pal, Endomondo, Spark People and many more.
Controls & Display
Flex uses five white LED indicator lights to show you how your day is stacking up against your goals. Each light represents 20% of your goal. Just tap the display twice to see your progress against your daily goal.


Fitbit FLEX is sold with both a small and large wrist band. Small is 5.5 – 6.9 inches (140-176mm) and Large is 6.3 – 8.2 inches (161-209mm). Both with a width of 0.6 inches (13.99mm)


Wireless sync to PC and Mac
Fitbit trackers are the first all day activity tracker to offer Bluetooth Low Energy connectivity. Syncing occurs automatically when within 20 feet of the wireless sync dongle. The dongle plugs into your Mac and PC’s USB port. Syncing and uploading require use of the Fitbit Connect application.

Recommendation is to sync your data regularly. As long as your FLEX has battery power, it tracks the most recent seven days of detailed, minute-by-minute data. It also trackers your daily total for the past 30 days and summarizes your daily calories, distance and steps taken.

Batteries and Power
FLEX battery lasts approximately five days when filly charged. When charging your FLEX the LED lights will indicate its level of charge. The battery type is a Liuthium-polymer.

Browsers supported
Chrome 12+, Firefox 3.6.18+, Internet Explorer 8+ and Safari on Mac 5.0.5+.

PC & Mac Requirements:

  ✿   Windows XP/Vista/7/8 or Mac OS X 10.5+
  ✿   USB Port
  ✿   Internet Connection

Sensors and Motors
FLEX uses a MEMS 3-axis accelerometer that measures your motion patterns to determine your calories burned, distance travelled, steps taken and sleep quality. FLEX also contains a vibration motor, which allows it to vibrate when alarms are set to go off.

Environmental requirements:

  ✿   Operating temp: -20° to 45°C
  ✿   Non operating temp: -30° to 60°C
  ✿   Water resistant: Device is water resistant and can be submerged up to 10 meters
  ✿   Maximum operating altitude: 30,000 feet
  ✿   iPhone 5, 5S and 5C
  ✿   iPhone 4S
  ✿   iPod Touch (5th generation)
  ✿   iPad 3, iPad 4 and iPad Air
  ✿   iPad Mini
  ✿   Samsung Galazy S3, S3 Mini, S4, S4 Mini, S4 Active and S5
  ✿   Samsung Galazy Note II, III, and 10.1
  ✿   LG G2, G Flex, GPro 2 and Vu3.0
  ✿   HTC One (OS v4.3+) and HTC One (M8)
  ✿   Motorola Moto E, Moto X and Moto G
  ✿   Nexus 4 and 5
  ✿   Nexus 7 (2013)
  ✿   Sony Xperia SP, T, TX, V, Z, Z1, Z1S, ZL, ZR, Z Ultra, Z1 Compact and Tablet Z (OS v4.3+)
  ✿   Huawei Ascend P7
In the box

  ✿   Flex™ Tracker
  ✿   Small & Large wristbands
  ✿   Charging Cable
  ✿   Wireless Sync Dongle
  ✿   Free Fitbit Account

Flex wristbands and accessory bands come in seven fun colours!

  ✿   Black
  ✿   Slate
  ✿   Tangerine
  ✿   Teal
  ✿   Navy
  ✿   Pink
  ✿   Violet
  ✿   Lime


Fitbit FLEX coms in both a small and large wrist band

  ✿   Small is 5.5 – 6.9 inches (140-176mm)
  ✿   Large is 6.3 – 8.2 inches (161-209mm).
  ✿   Both with a width of 0.6 inches (13.99mm)