FEATURES
HEALTH
- Stress Management Score
Better understand how your body is handling stress with a daily score.
- EDA Scan App
The on-wrist EDA Scan app detects electrodermal activity—which may indicate your body’s response to stress—and reveals a graph in the Fitbit app to illuminate it.
- Reflection
Easily log your mood, from very stressed to very calm, on Sense after an EDA Scan session or in the Fitbit app to help you reflect on what makes you feel your best.
- Fitbit ECG App
With a compatible ECG app right on your wrist, assess your heart for atrial fibrillation—a heart rhythm irregularity—and share the results with your doctor. The Fitbit ECG app is only available in select countries. Not intended for use by people under 22 years old. See here for additional details.
- Oxygen Saturation (SpO2) Monitoring
Sense tracks SpO2—the level of oxygen in your blood—to help you learn when there may be an indication of important changes in your fitness and wellness. See your SpO2 nightly average and range on wrist with an SpO2 clock face, and view trends over the past week in the Fitbit app.
- On-Wrist Skin Temperature Sensor
Sense tracks your skin temperature each night to show how it varies from your personal baseline, so you can be aware of your trends over time.
- Free Fitbit Premium™ Trial
Sense unlocks a free 6-month trial for new Premium users so you can optimize your well-being. See your SpO2, breathing rate and heart rate variability trends over the past month in the Health Metrics dashboard, plus access advanced mindfulness & stress management tools, deeper sleep analysis, detailed sleeping skin temperature, personalized insights and more.
- High & Low Heart Rate Notifications
Your heart rate is a key indicator of your health, so Sense keeps you informed when it’s above or below your threshold.
- 24/7 Heart Rate Tracking with PurePulse® 2.0
With an all-new multipath sensor, Sense delivers PurePulse 2.0—Fitbit’s 24/7 continuous heart rate tracking for exercise, sleep tracking and everything in between.
- Heart Rate Zones
During workouts, get real-time stats on screen to see whether you’re in fat burn, cardio or peak zone, so you can dial the effort up or down according to your goals.
- Breathing Rate
Automatically measure your breathing rate while you sleep to help you understand your wellness and learn if there are signs of significant changes. View your nightly average and trends over the past week in the Health Metrics dashboard.
- Heart Rate Variability
Track heart rate variability (HRV)—the variation of time between each heartbeat— to see if your body is showing potential signs of stress, illness or fatigue. View your nightly average and trends over the past week in the Health Metrics dashboard.
- Menstrual Health Tracking
Know your body better by using Sense and the Fitbit app to log periods, record symptoms, track your ovulation and discover patterns in your cycle.
DAY & NIGHT
- Built-In GPS
During outdoor runs, rides, hikes and more, use built-in GPS to see your pace and distance on Sense, then see a map of your workout in the Fitbit app.
- Workout Intensity Map—In App Only
After outdoor exercise, check your workout intensity map in the Fitbit app to see your heart rate zones throughout your route and learn where you put in the most effort.
- Active Zone Minutes
Active Zone Minutes help you make every minute count during workouts by buzzing your wrist when you enter your personalized target heart rate zone.
- 20+ Goal-Based Exercise Modes + SmartTrack™
Choose from up to 20+ exercise modes to get real-time stats during your workouts—or let SmartTrack™ automatically recognize and record your exercises.
- Swimproof
Sense is water resistant to 50 meters, which means you’re free to track laps in the pool and wear it in the shower, at the beach and beyond.
- All-Day Activity Tracking
Track all-day activity like steps, distance, floors climbed, active minutes and calories burned to show how every part of your day gets you closer to your goals.
- Sleep Stages & Sleep Score
See your time in light, deep and REM sleep and get a daily Sleep Score in the Fitbit app and on your wrist to better understand your sleep quality each night.
- Smart Wake
Set your Fitbit alarm to wake you with a quiet vibration during a lighter sleep stage to help you feel more refreshed.
- Sleep Mode
Snooze uninterrupted by using sleep mode to mute smartphone notifications and stop your screen from turning on at night. Set a schedule to turn sleep mode on automatically.
- Do Not Disturb Mode
Use do not disturb mode when you want to mute call, text, calendar and app notifications during the day.
SMART
- Voice Assistant
Quickly check the weather, set bedtime reminders and alarms, control your smart home devices and more—just by speaking to Google Assistant or Alexa Built-in on your wrist.
- Calls From Your Wrist
Use the built-in mic and speaker to take Bluetooth® calls hands-free, send callers to voicemail and adjust volume. Available when phone is nearby.
- Call, Text & App Notifications
Get notifications for calls, texts, calendar events and apps like Gmail and Facebook—plus send quick replies and voice replies right from your wrist. Available when phone is nearby. Replies on Android only.
- Music Experience
Store and play music & podcasts on Deezer or Pandora and control Spotify from your wrist—then, use them to stay motivated with curated playlists specifically made for your favorite workouts.
- Fitbit Pay™
Load your credit and debit cards to your Wallet in the Fitbit app, then use your watch to tap and pay for purchases on the go—at transit stations, stores and more. See bank and transit availability.
- Always-On Display Mode
See real-time exercise stats and check the time with just a glance—even when your hands are full. Turn the mode off to be more discreet. Always-on display mode requires more frequent charging.
- Apps on Your Wrist
Download hundreds of apps for fitness, sports and fun—everything from Uber to United Airlines to Spotify to TRX®.
- Find My Phone App
Can’t find your phone? Easily locate a misplaced phone right from your wrist by using the built-in Find My Phone app on your Fitbit smartwatch. Just tap to activate an alert and your phone will continuously ring and vibrate until you discover its location. Fitbit Mobile app must be running on your smartphone.
- Clock Faces
Choose from hundreds of clock face designs and store up to 5 of your favorites right on your wrist, then easily switch your look from classic to modern and back—or go for something totally unique with your own photo.
DESIGN & MORE
- 6+ Day Battery
A day lasts 24 hours. So should your watch. With 6+ day battery life, Fitbit Sense tracks your morning, night & everything in between without needing to stop for a charge. Varies with use and other factors; up to 12 hours with continuous GPS.
- Fast Charging
If you’re always on the move, fuel up with quick charging that gives your watch a full day’s charge in just 12 minutes.
- Biosensor Core
Skin temperature sensing, heart rate tracking and battery charging all take place inside this powerful, water-resistant hub on the back of Sense.
- Leading Edge Design
A polished stainless steel ring, custom AMOLED display, laser-bonded Corning® Gorilla® Glass 3 and innovative biosensor core make every piece of Sense exceptional by design.
- Infinity Band
The velvety soft new infinity band is lightweight, flexible and comfortable—seamless edges and a low profile are perfect for wearing all day and night.
- Accessories
Create endless looks with Fitbit Sense accessory bands, including Fitbit.com exclusive collections from Victor Glemaud and Pendleton. New quick-release feature makes it easier than ever to swap looks.
- Fitbit App
From activity and sleep to nutrition, resting heart rate and group challenges, you can track all your progress in the free Fitbit app.
SPECS
What’s included:
- Fitbit Sense™
- Classic wristband (both small & large)
- Charging cable
Sensors & Components
- Multi-path optical heart rate sensor
- Multipurpose electrical sensors compatible with ECG app & EDA app
- Red and infrared sensors for oxygen saturation (SpO2) monitoring
- Gyroscope
- Altimeter
- 3-axis accelerometer
- Skin temperature sensor
- Ambient light sensor
- Wi-Fi (802.11b/g/n 2.4GHz)
- NFC
- Built-in GPS + GLONASS
- Vibration motor
- Speaker (75dB SPL @10cm)
- Microphone
Battery & Power
Battery life up to 6+ days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. Use of the always-on display and SpO2 features will require more frequent charging. We recommend charging every few days to ensure you’re always tracking.
- Battery type: Lithium-polymer
- Charge time: (10-80%): Approximately 40 minutes
- Fast charging: 1 day of battery life in 12 minutes
- Radio transceiver: Bluetooth®
Materials
This watch includes a band made of a flexible material similar to that used in many sports watches, as well as an aluminum watch case and buckle.