All-day body-response tracking
A cEDA sensor helps identify when your body is experiencing signs of stress so you can reflect on your emotions, take action and go on with your day. Use of the cEDA sensor may affect battery life.
Stress notifications
Get notified when stress events are detected so you can respond with physical activity, deep breathing & more.
EDA Scan app for stress management
Do EDA mindfulness sessions on your wrist to help you relax—and get instant feedback on your stress.
Reflections
Log your mood and get in tune with your emotional stress.
Stress Management Score
See how well your body's handling stress each day. Detailed score breakdown available with Premium.
Relax breathing sessions
Do simple guided breathing sessions by following promp... Show More
All-day body-response tracking
A cEDA sensor helps identify when your body is experiencing signs of stress so you can reflect on your emotions, take action and go on with your day. Use of the cEDA sensor may affect battery life.
Stress notifications
Get notified when stress events are detected so you can respond with physical activity, deep breathing & more.
EDA Scan app for stress management
Do EDA mindfulness sessions on your wrist to help you relax—and get instant feedback on your stress.
Reflections
Log your mood and get in tune with your emotional stress.
Stress Management Score
See how well your body's handling stress each day. Detailed score breakdown available with Premium.
Relax breathing sessions
Do simple guided breathing sessions by following prompts on your wrist.
Sleep tracking & sleep stages
Automatically tracks how long you sleep each night and time spent in light, deep and REM sleep stages.
Sleep Profile
Get matched with a sleep animal and see a personalized analysis of your sleep every month. Requires Fitbit Premium membership. Not intended for medical purposes. Consult your healthcare professional for questions about your health.
Sleep Score
Learn about the quality of your previous night's sleep with a personalized Sleep Score.
Smart Wake alarm
Vibrating alarm wakes you during the optimal sleep stage so you feel refreshed.
SpO2 (blood oxygen) tracking
Tracking SpO2 tells you how well blood oxygen is distributed in your body, which can help you understand potential changes in your wellness.
Not available in all markets. Not intended to diagnose or treat any medical condition or for any other medical purpose. Intended to help you manage your well-being and keep track of your information. Requires more frequent charging.
Irregular heart rhythm notifications
Check for signs of an irregular heart rhythm that may be atrial fibrillation (AFib), so you can share this information with your healthcare provider.
Only available in select countries and with select Fitbit products; not intended for use by people under 22 years old or with known atrial fibrillation.
ECG app for heart rhythm assessment
Compatible ECG app lets you assess your heart rhythm for atrial fibrillation—a heart rhythm irregularity—and share results with your doctor.
Only available in select countries and with select Fitbit products; not intended for use by people under 22 years old. See here for additional details.
Resting heart rate
An important indicator of your heart health & fitness. In general, active people have a lower RHR.
High & low heart rate notifications
If resting heart rate is above or below your usual range, you get notified in the Fitbit app.
Heart rate variability
Tracks HRV–your time between heartbeats. A downward trend over multiple nights could potentially be a result of overtraining, lack of sleep, stress and more.
Only available in select countries. Not intended for medical purposes or to diagnose or treat any medical condition. This feature is only intended to provide information to assist you with managing your well-being.
Skin temperature sensor
A built-in sensor tracks changes in your skin temperature to help you understand potential changes in your wellness.
Only available in the Fitbit app and only displays variation. Not available in all markets. Not intended for medical purposes. Significant changes in ambient temperature may negatively impact skin temperature tracking.
Breathing rate
Small variations in your breathing rate could be a sign of changes in your well-being.
Only available in select countries. Not intended for medical purposes or to diagnose or treat any medical condition. This feature is only intended to provide information to assist you with managing your well-being.
Wellness report
Get a PDF of your key health & wellness stats from the last few months that you can share with a healthcare professional.
Available with Premium.
Blood glucose tracking (in app only)
Log your glucose levels and see how activity, sleep, stress & nutrition impact your trends in the Fitbit app. Advanced analytics available with Premium.
Available in select countries. Not a replacement for medical advice and not intended to diagnose or treat any medical condition. Intended to help you monitor and keep track of your information. Talk to your healthcare provider for more guidance.
Menstrual health tracking
Log periods, record symptoms, find patterns in your cycle & estimate your ovulation window.
Not intended to be used for contraceptive or other medical purposes. May not accurately predict your menstrual cycles or related information. Intended only to help you monitor and keep track of certain information.
Heart rate tracking
The heart of it all—heart rate powers important data like calorie burn, sleep stages, resting heart rate & more.
Daily Readiness Score
Find out if your body's ready to work out or needs time to recover. Available with Premium.
Active Zone Minutes
Tracks your time in heart rate zones so you get credit when you work harder. Workouts in cardio or peak zones earn double minutes.
Built-in GPS
See pace & distance on your wrist—no phone needed.
Exercise modes
Track your favorite exercises like runs, bike rides, weights, yoga & more and get live stats on your wrist.
Steps, distance & calories
Displays stats on wrist and in the Fitbit app.
Water resistant
Water resistant to 50m for the pool, shower & more.
Cardio Fitness Score
Estimate your fitness level using your VO2 Max (how well your body uses oxygen during exercise).
Automatic exercise tracking
Auto-detects when you're exercising and records your stats in the app.
Workouts on your phone
Sweat to high-energy workouts in the Fitbit app, from Fitbit trainers & popular partner brands. Most workouts require a Premium membership.
Call, text and app notifications
See calls, texts & smartphone app notifications on your wrist when your phone is nearby.
On-wrist Bluetooth® calls
Answer calls on your wrist, send callers to voicemail and adjust volume (when your phone is nearby).
Alexa Built-in
Use Alexa Built-in to get quick news and weather, set alarms, control your smart home devices and more.
Amazon, Alexa and all related marks are trademarks of Amazon.com, Inc. or its affiliates. Alexa is not available in all languages and countries. Alexa features and functionality may vary by location. Amazon account and app required.
Google Maps
Easily get where you're going with an interactive view and turn-by-turn directions on your wrist.
Google Wallet
Make purchases from your wrist with Google Wallet everywhere Google Pay is accepted.
Find My Phone
Find your phone without making someone call it for you.
Always-on display mode
Keeps your display on at all times (may require more frequent charging).
Do not disturb & sleep mode
Mutes calls & notifications and turns your screen off.
Compatible with iOS and Android devices
Fitbit devices are compatible with iOS and Android phones.
Slim design
Sense 2 is built to feel natural on your wrist and complement styles both casual and elegant. It's sleek and slim with all-new raised band attachments that make it more comfortable for all-day wear.
6+ day battery
Long battery life means less charging, more living.
Battery life varies with use & other factors.
Fast charging
Get a day's worth of battery in just 12 minutes.
Battery life varies with use & other factors.
Clock faces & accessories
Give your Fitbit a stylish new look with dozens of clock faces and accessory bands to choose from.
Color touchscreen
A bright color display for sharp stats all day.
Fitbit Premium membership
Your Fitbit includes a Premium membership for workouts with expert trainers, sleep insights & more. New and returning Premium members only. Must activate membership within 60 days of device activation in the Fitbit app (requires valid payment method). Membership cannot be gifted. Cancel before end of membership to avoid recurring fees. Content and features may change. T&C apply.
What's included:
Fitbit Sense 2
Classic band (small & large)
Charging cable
Sensors & Components
Multi-path optical heart rate sensor
Electrical sensor to measure skin conductance (cEDA) for body response tracking
Multipurpose electrical sensors compatible with ECG app & EDA app. ECG not available in all countries.
Red and infrared sensors for oxygen saturation (SpO2) monitoring
Gyroscope
Altimeter
3-axis accelerometer
Skin temperature sensor
Ambient light sensor
WiFi (deactivated, cannot be turned on)
NFC
Built-in GPS + GLONASS
Vibration motor
Speaker (75dB SPL @10cm)
Microphone
Battery & Power
Battery life of 6+ days. Battery life and charge cycles vary with use, settings and other factors; actual results will vary. Use of the always-on display, SpO2 and the cEDA sensor will require more frequent charging. Up to 5 hours with continuous GPS. We recommend charging your tracker every few days to ensure you are always tracking.
Battery type: Lithium-polymer
Charge time (0-100%): Two hours
Charge 12 minutes to get one day of battery life
Radio transceiver: Bluetooth® 5.0
Memory
Saves 7 days of detailed motion data, minute by minute
Saves daily totals for the last 30 days
Stores heart rate data at one-second intervals during exercise tracking and at five-second intervals all other times
Water Resistant
Water resistant to 50m. After getting the band wet, we recommend drying the band because, as with any wearable device, it's best for your skin if the band is clean and dry.
Care
Give your wrist a rest by taking the band off every now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on.
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.
Heart Rate
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
Environmental Requirements
Operating temperature: -14° to 113°F
Syncing
Google account will be required. See fitbit.com/devices.
The Fitbit app is compatible with most popular phones. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running one of the following operating systems:
Apple iOS 15 or higher.
Android OS 10 or higher. See additional tips for Android phones here.
Syncing range: Up to 30ft
Certain features like smartphone notifications may require Android 10+. Check your device compatibility.
Syncing requires Bluetooth® LE, an internet connection and location permissions granted on the phone
Band Size
Small: Fits wrist 5.1" - 7" in circumference
Large: Fits wrist 6.5" - 8.6" in circumference
Dimensions
1.5" l x 1.5" w x 0.45" h
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