Fit for every you.

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Our most iconic tracker, now more customisable than ever.

Our slimmest wristband yet
Removable tracker fits in bands, bangles and pendants

Standout Features

  • Swim-Proof Track swimming
  • Interchangeable Accessories
  • Reminders to Move
  • SmartTrack™ Auto Exercise Recognition
  • Call & Text Notifications

Essential Features

  • All-Day Activity
  • Auto Sleep Tracking
  • LED Display Shows progress to goal
  • Long Battery Life Up to 5 days*

For wherever life takes you.

Make fitness fun, day and night.

All-Day Activity Tracking

Track your steps, distance, calories burned, active minutes, hourly activity and stationary time.

SmartTrack

Automatically track activities like running, sports and aerobic workouts, then see exercise summaries in the Fitbit app.

Auto Sleep Tracking

Automatically track how long and how well you sleep, set a sleep goal and bedtime reminder to form good habits and wake up peacefully with a silent alarm.

Swim-Proof

Track swimming automatically and see your exercise summary in the Fitbit app. Plus, never worry about making a splash – from bubble baths to beach days.

Stay connected to your day.

Call & Text Notifications

When you get calls and texts, Flex 2 vibrates and the discreet LED display flashes colour-coded lights, so you don’t miss the messages that matter.

Reminders to Move

To help you stay active throughout the day, Flex 2 sends Reminders to Move that encourage you to take 250 steps every hour.

Long Battery Life

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

Learn how Flex 2 notifications work.

  • Call Notification
  • Reminder to Move
  • Text Notification
  • Goal Celebration
  • Silent Alarm

A tracker so small, it’s a big deal.

31.7 x 8.9 x 6.8 mm Weighs 23.53 g (0.83 oz)
Flex 2 Circle

Style it for fitness. Style it for life.

Wristband

These super-slim, swim-proof wristbands are designed with comfort in mind.

Bangle

Hit goals and get compliments in this beautiful, hand-polished bangle.

Pendant

This elegant pendant hangs gracefully while tracking your steps, distance and more.**

You’ve never seen fitness like this.

See how easily you can transform your tracker from day to night or workout to wedding with Flex 2 accessories and designer collections.

SEE DESIGNER COLLECTIONS

Get the full experience in the Fitbit app.

Sync Wirelessly

Flex 2 syncs wirelessly and automatically to 200+ iPhone, Android and Windows devices.

EXPLORE THE FITBIT APP

SEE Fitbit FLEX 2 SPECS AND DETAILS

What's Included

  • Removable Fitbit Flex 2 tracker
  • 2 Classic wristbands (small and large)
  • Charging cable

Sensors & Components

  • 3-axis accelerometer
  • Vibration motor

Display

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

Battery and Power

We recommend charging 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: One to two hours
  • Radio transceiver: Bluetooth 4.0

Memory

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

Swim-Proof

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. We do not recommend wearing Flex 2 in a hot tub or sauna. See www.fitbit.com/productcare for more details.

Care

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. Learn more.

Materials

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+ mobile devices. Smartphone notifications 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 4.4 and later, and Windows 10 devices.

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

**Certain features like auto sleep tracking and SmartTrack may be disabled in the pendant.