Removable tracker fits in bands, bangles & pendants
Our slimmest wristband yet
Make fitness fun,
day and night.
All-Day Activity Tracking
Track your steps, distance, calories burned, active minutes, hourly activity and stationary time.
Smart Track
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 & wake up peacefully with a silent alarm.
Swim-Proof
Track swimming automatically & 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 color-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.
A tracker so small, it's a big deal.
31.7 x 8.9 x 6.8 mm
Weighs 0.83 oz
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.**
Sizing.
Fits wrists 5.5” - 6.7” in circumference
Fits wrists 6.7” - 8.1” in circumference
Print this guide to find the right size for you, and size up if you’re in between sizes.
Technical specifications.
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: 14° to 113° F
- Maximum operating altitude: 30,000 feet
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 30 feet
- Syncing requires Bluetooth LE and Internet connection.
- 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.