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Fitbit Flex 2 - Black

Track activity & sleep and get notifications with this ultra-slim swim-proof Fitbit Flex 2 fitness wristband. The removable tracker fits in band, bangle & pendant accessories.

For wherever life takes you

Track your steps, calories burned, workouts, and more, without ever pushing a button. Friendly reminders keep you moving all day.

Key features include:

  • Call and text notifications.
  • SmartTrack™ exercise recognition
  • Removable tracker fits in bands, bangles, and pendants.


Style it for life

The tracker is small. Slip it into the ultra-slim, waterproof wristband, or dress it up with bangle and pendant accessories.


Make a splash

Automatically track swimming and then see your exercise summary in the Fitbit app.

*Fitbit Flex 2 is water resistant to 50 meters.


Track your fitness—day and night

Track your steps, distance, calories burned, active minutes, hourly activity, and stationary time. Then let it automatically track your sleeping patterns for a better night’s sleep.


Keep your day going

With up to 5-day battery life** in an ultra-slim package, you can track your workout all day and night without needing a charge.

**Your fully charged Fitbit Flex 2 has a battery life of up to 5 days. Note that battery life and charge cycles vary with use, settings, and many other factors; actual results will vary.


Track activity & sleep and get notifications with this ultra-slim swim-proof Fitbit Flex 2 fitness wristband. The removable tracker fits in band, bangle & pendant accessories.

All-day activity tracking
Track steps, distance, calories burned, active minutes, hourly activity & stationary time.

Auto sleep tracking & silent alarms
Automatically track your sleep quality & wake up peacefully with a silent alarm.

Interchangeable accessories
Style this ultra-slim, removable tracker with wristband, bangle, and pendant accessories.

LED display
An LED display lights up when you get calls, texts, and Reminders to Move, and shows you how close you are to your daily goal with a simple tap.

Automatically recognizes select activities and records them in the exercise section of the Fitbit app.

Reminders to Move
Get friendly Reminders to Move that encourage you to reach an hourly goal of 250 steps.

Smartphone notifications
Get call & text notifications (when your phone is nearby) with unique vibration patterns and color-coded LED lights: blue for calls, purple for texts.

Track swimming
Wear it in the shower, ocean, or pool. Track swimming automatically and see your workout summary in the Fitbit app.

Long battery life
Battery life up to 5 days so you can track all day and night without needing a charge.*

Wireless syncing
Sync stats wirelessly & automatically to computers and 200+ leading iOS®, Android™, and Windows® devices.

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

What's included:

  • Removable Fitbit Flex 2 tracker
  • 2 Classic wristbands (small and large)
  • Charging cable
  • Sensors & components
  • 3-axis accelerometer
  • Vibration motor


  • LED display with 5 indicator lights
  • Tap twice to see progress against your Main Goal

Battery and power

  • Fitbit recommends to charge your Fitbit Flex 2 every few days to ensure that you're always tracking.
  • Battery life up to 5 days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary.
  • Battery type: Lithium-polymer
  • Charge time: 1 to 2 hours
  • Radio transceiver: Bluetooth® 4.0


  • Saves 7 days of detailed motion data—minute by minute.
  • Saves daily totals for past 30 days.

Fitbit Flex 2 is the first swim-proof device from Fitbit, meaning it is water-resistant to 50 meters. After swimming or getting the band wet, we recommend drying off the band because, as with any wearable device, it's best for your skin if the band is clean and dry. See for more details.

If the band gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Give your wrist a rest by taking the band off every now and then.

The Fitbit Flex 2 wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. Flex 2 also has a surgical-grade stainless steel clasp.

Environmental requirements

  • Operating temperature: -10° to 45° C
  • Maximum operating altitude: 9,144 m

Syncing & notifications

Using Bluetooth LE wireless technology, Fitbit Flex 2 sends smartphone notifications and syncs automatically to computers and 200+ leading iOS, Android and Windows devices. Certain features like smartphone notifications or Connected GPS may require Android 5.0+. Look up your device to check compatibility.

  • Syncing range: Up to 6.1 m
  • Syncing requires Bluetooth LE and Internet connection. Windows 10 computers that do not have Bluetooth LE will need a wireless sync dongle in order to sync.
  • Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, Android 4.3 and later, and Windows 10 devices.


Compatible Devices
  • Apple:
  • Apple iPhone 6s , Apple iPhone 6s Plus , Apple iPhone SE , Apple iPad mini 4 , Apple iPhone 7 , Apple iPad mini 2 , Apple iPhone 5s - 16GB $149.99 with the Purchase of $45 Airtime Card , Apple iPhone 7 Plus , Apple iPad Air 2 , Apple iPad Pro (12.9-inch) , Apple iPad mini 3 , Apple iPad Pro (9.7-inch)
  • Asus:
  • ASUS MeMO Pad 7 LTE
  • AT&T:
  • AT&T SIM Card - LG G Series , AT&T SIM Card - Samsung Galaxy S6 Series , AT&T Trek HD , AT&T SIM Card - Samsung Galaxy S5 Series , SIM Card for iPhone 5, 5s, 5c , SIM Card for iPhone 6, 6s, 6 Plus, 6s Plus , SIM for iPhone 7, 7 Plus
  • BlackBerry:
  • PRIV by BlackBerry
  • HTC:
  • HTCDES610 , HTC One (M8) for Windows , HTC One M8 , HTC One A9 , HTC First
  • Kyocera:
  • KYOCERA DuraForce PRO , Kyocera DuraForce XD , Kyocera DuraForce , Kyocera DuraForce GoPhone
  • LG:
  • LG G Pad X 8.0 , LG G Pad X 10.1 , LG G3 , LG V20 , LG G Vista 2 , LG Phoenix 2 GoPhone , LG G5 , LG Escape2 , LGG2 , LG K10 , LG V10 , LG G Pad F 8.0 , LG G3 Vigor
  • Microsoft:
  • Microsoft Lumia 950 GoPhone , Microsoft Surface 3 , Microsoft Lumia 640 XL
  • Motorola:
  • Motorola Moto E GoPhone
  • NEC:
  • NEC Terrain
  • Samsung:
  • Samsung Galaxy S6 active , Samsung Galaxy S6 , Samsung Galaxy Express Prime GoPhone , SamsungGalaxyJ32016 , Samsung Galaxy S5 , Samsung Galaxy Tab E , Samsung Galaxy Express 3 , SamsungGalaxyS7Active , Samsung Galaxy Tab 4 8.0 , Samsung Galaxy S7 edge , SamsungGalaxyS7 , Samsung Galaxy S6 edge , Samsung Galaxy View 18.4
  • ZTE:
  • ZTE Maven 2 GoPhone , ZTE Maven GoPhone , ZTE ZMAX 2 GoPhone

California residents: See the Proposition 65 warning

Item SKU: 4077H(Fitbit Flex 2 - Black)

bACCESSORY DISCOUNT: Available to qualified employees, students, members and other authorized individuals associated with eligible Sponsoring Organizations with a qualified Business Agreement. Requires valid proof of eligibility. Qualified individual must subscribe to service under an account for which he/she is personally liable. Discount is available only on select phone and tablet accessories (unless otherwise provided in the Business Agreement) as determined solely by AT&T from time to time; eligible accessories will be identified as such in online buy flow. Discount may not be combined with other promotional pricing or offer. Additional restrictions apply. If you have a question about your eligibility, contact your Sponsoring Organization or visit a store or contact AT&T for offer details.

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