fitbit Sense 2 Smart Watch User Manual

: June 12, 2024
: Fitbit

Table of Contents

fitbit Sense 2 Smart Watch
Product Information
Specifications:
Product Usage Instructions
Table of Contents
Always-On Display
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

fitbit Sense 2 Smart Watch

Product Information

The product is the Fitbit Sense 2, a smartwatch designed to track various aspects of your health and fitness. It comes with a range of features including heart-rate monitoring, sleep tracking, stress management, exercise tracking, contactless payments, and more. The smartwatch also includes built- in Amazon Alexa voice assistant for added convenience.

Main Features:

Heart-rate monitoring
Sleep tracking
Stress management
Exercise tracking
Contactless payments
Built-in Amazon Alexa voice assistant

Specifications:

Sensors and Components: Heart-rate monitor, GPS, accelerometer, gyroscope, skin temperature sensor, EDA Scan app
Materials: Durable and lightweight materials
Wireless technology: Bluetooth
Haptic feedback: Yes
Battery: Long-lasting battery life
Memory: Sufficient storage for data and apps
Display: Clear and vibrant touchscreen display
Band size: Adjustable to fit various wrist sizes
Environmental conditions: Suitable for everyday use in various conditions

Product Usage Instructions

Getting Started:

Charge your watch using the provided charger.
Set up the Fitbit Sense 2 using the instructions in the user manual.
Download and install the Fitbit app on your smartphone to view your data.

Wearing and Using the Fitbit Sense 2:

Choose the appropriate placement for all-day wear or during exercise.
Fasten the band securely on your wrist.
Refer to the handedness section to determine the correct way to wear the watch.
Familiarize yourself with the basic navigation and button shortcuts.
Adjust settings such as display, vibration, audio, and notifications according to your preferences.
Check the battery level regularly to ensure uninterrupted usage.

Using Clock Faces, Tiles, and Apps:

Change the clock face to customize the appearance of your watch.
Rearrange tiles and manage apps to prioritize the information you want to see.
Open, remove, reinstall, update, and adjust settings for apps installed on your watch.

Using the Voice Assistant:

Set up Amazon Alexa Built-in on your Fitbit Sense 2.
Interact with your voice assistant using voice commands.
Check Alexa alarms, reminders, and timers directly from your
watch.

Activity, Wellness, and Health Tracking:

Track your daily activity goals and choose personalized goals.
Monitor your hourly activity and track your sleep patterns.
Set a sleep goal and gain insights into your sleep behaviors.
Manage stress using the EDA Scan app and practice guided breathing exercises.
Track advanced health metrics and monitor your body responses.

Exercise and Heart Health:

Automatically track your exercises or use the Exercise app for specific workouts.
Customize your exercise settings to match your preferences.
Check your workout summary, heart rate, and custom heart-rate zones.
Earn Active Zone Minutes and receive heart-rate notifications.
Monitor your daily readiness score and view your cardio fitness score.

Contactless Payments:

Set up contactless payments on your Fitbit Sense 2.
Make purchases using credit and debit cards linked to your watch.
Change your default card for convenience.
Pay for transit using your watch.

Updating, Restarting, and Erasing:

Update the software of your Fitbit Sense 2 to ensure you have the latest features.
Restart or shut down your watch when necessary.
Erase your watch if needed.

Please refer to the user manual for troubleshooting, additional information, regulatory notices, and warranty details.

User Manual Version 2.0

Get started
What’s in the box Charge your watch Set up Sense 2 See your data in the Fitbit app
Unlock Fitbit Premium
Wear Sense 2
Placement for all-day wear vs. exercise Fasten the band Handedness Wear and care tips Change the band
Remove a band Attach a band
Basics
Navigate Sense 2 Basic navigation Button shortcuts Quick settings Tiles
Adjust settings Display Vibration & audio Notifications Goal reminders Quiet modes Shortcut Voice assistant About Sense 2
Check battery level

7 7 8 9 9
10
11 11 12 13 14 14 14 15
16 16 16 17 18 20 20 20 20 21 21 21 21 22 22 22
2

Set up device lock Adjust always-on display Turn off the screen
Clock Faces, Tiles, and Apps
Change the clock face Rearrange tiles Manage apps
Open apps Remove apps Reinstall apps Update apps Adjust app settings and permissions
Voice Assistant
Set up Amazon Alexa Built-in Interact with your voice assistant Check Alexa alarms, reminders, and timers
Lifestyle
Weather Find Phone Google Maps
Notifications from your phone
Set up notifications See incoming notifications Manage notifications Turn off notifications Answer or reject phone calls
Take on-wrist phone calls Respond to messages (Android phones)
Timekeeping
Set an alarm Dismiss or snooze an alarm
Use the timer or stopwatch

23 23 24
26 26 27 27 27 27 28 28 28
30 30 30 32
33 33 34 34
35 35 35 36 36 37 38 39
40 40 40 41
3

Time events with the stopwatch Keep track of elapsed time with the countdown timer
Activity and Wellness
See your stats Track a daily activity goal
Choose a goal Track your hourly activity Track your sleep
Set a sleep goal Get insights into your long-term sleep behaviors Learn about your sleep habits Track your skin temperature changes Track your period Manage stress Use the EDA Scan app Practice guided breathing Check your stress management score Track your body responses Advanced health metrics
Exercise and Heart Health
Track your exercise automatically Track and analyze exercise with the Exercise app
Customize your exercise settings Check your workout summary Check your heart rate Custom heart-rate zones Earn Active Zone Minutes Receive heart-rate notifications Check your daily readiness score View your cardio fitness score Share your activity
Contactless Payments
Use credit and debit cards

41 41
43 43 45 45 45 46 46 46 47 47 49 49 49 50 51 51 52
53 53 54 55 56 57 59 59 59 60 61 61
62 62
4

Set up contactless payments

62

Make purchases

63

Change your default card

64

Pay for transit

65

Update, Restart, and Erase

66

Update Sense 2

66

Restart Sense 2

66

Shutdown Sense 2

67

Erase Sense 2

67

Troubleshooting

68

Heart-rate signal missing

68

GPS signal missing

68

Other issues

69

General Info and Specifications

70

Sensors and Components

70

Materials

70

Wireless technology

71

Haptic feedback

71

Battery

71

Memory

71

Display

71

Band size

71

Environmental conditions

72

Learn more

72

Return policy and warranty

72

Regulatory and Safety Notices

73

USA: Federal Communications Commission (FCC) statement

73

Canada: Industry Canada (IC) statement

74

European Union (EU)

75

Argentina

77

Australia and New Zealand

77

Ghana

77

5

Indonesia Israel Japan Kingdom of Saudi Arabia Malaysia Mexico Morocco Nigeria Oman Paraguay Philippines Serbia Singapore South Korea Taiwan Thailand United Arab Emirates United Kingdom Vietnam About the Battery IP Rating Safety Statement Regulatory Markings

77 78 78 78 79 79 79 80 80 80 80 81 81 81 81 85 85 85 86 86 87 87 87
6

Get started
Meet Fitbit Sense 2 by Google–the smartwatch designed to help you stress less, sleep better, and live healthier. Take a moment to review our complete safety information at fitbit.com/safety. Sense 2 is not intended to provide medical or scientific data.
What’s in the box
Your Sense 2 box includes:

Watch with small band (color and material varies)

Charging cable

Additional large band

The detachable bands on Sense 2 come in a variety of colors and materials, sold separately.

7

Charge your watch
A fully-charged Sense 2 has a battery life of 6+ days. Battery life and charge cycles vary with use and other factors; actual results will vary. To charge Sense 2:
1. Plug the charging cable into the USB port on your computer, a UL-certified USB wall charger, or another low-energy charging device.
2. Hold the other end of the charging cable near the port on the back of the watch until it attaches magnetically. Make sure the pins on the charging cable align with the port on the back of your watch.
Charge Sense 2 for 12 minutes for 24 hours of battery life. While the watch charges, tap the screen twice or press the button to turn the screen on. Charging fully takes about 1-2 hours.
8

Set up Sense 2
Set up Sense 2 with the Fitbit app for iPhones and iPads or Android phones. The Fitbit app is compatible with most popular phones. See fitbit.com/devices to check if your phone is compatible.
To get started: 1. Download the Fitbit app: l Apple App Store for iPhones l Google Play Store for Android phones 2. Install the app, and open it. 3. Tap Sign in with Google, and follow the on-screen instructions to set up your device.
When you’re done with setup, read through the guide to learn more about your new watch and then explore the Fitbit app. For more information, see the related help article.
See your data in the Fitbit app
Open the Fitbit app on your phone to see your health metrics, activity and sleep data, choose a workout or mindfulness session, and more.
9

Unlock Fitbit Premium
Fitbit Premium is your personalized resource in the Fitbit app that helps you stay active, sleep well, and manage stress. A Premium subscription includes programs tailored to your health and fitness goals, personalized insights, hundreds of workouts from fitness brands, guided meditations, and more. Customers can redeem a Fitbit Premium trial subscription in the Fitbit app. For more information, see the related help article.
10

Wear Sense 2
Wear Sense 2 around your wrist. If you need to attach a different size band, or if you purchased another band, see the instructions in “Change the band” on page 14.
Placement for all-day wear vs. exercise
When you’re not exercising, wear Sense 2 a finger’s width above your wrist bone. In general, it’s always important to give your wrist a break on a regular basis by removing your watch for around an hour after extended wear. We recommend removing your watch while you shower. Although you can shower while wearing your watch, not doing so reduces the potential for exposure to soaps, shampoos, and conditioners, which can cause long-term damage to your watch and may cause skin irritation.
For optimized heart-rate tracking while exercising: l During workouts, try moving the band higher on your wrist to get a better fit. If you experience any discomfort, loosen the band, and if it persists give your wrist a break by taking it off.
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l Wear your watch on top of your wrist, and make sure the back of the device is in contact with your skin.
Fasten the band
1. Place Sense 2 around your wrist. 2. Slide the bottom band through the first loop in the top band.
3. Tighten the band until it fits comfortably, and press the peg through one of the holes in the band. If you use one of the last two holes in the smaller band, we recommend swapping to the larger band for a more secure fit. For
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instructions, see “Change the band” on the next page.
4. Slide the loose end of the band through the second loop until it lies flat on your wrist. Make sure the band isn’t too tight. Wear the band loosely enough that it can move back and forth on your wrist.

Handedness
For greater accuracy, you must specify whether you wear Sense 2 on your dominant or non-dominant hand. Your dominant hand is the one you use for writing and eating. To start, the Wrist setting is set to non-dominant. If you wear Sense 2 on your dominant hand, change the Wrist setting in the Fitbit app:

From the Today tab

in the Fitbit app, tap the icon in the top left

Wrist Dominant.

Sense 2 tile

13

Wear and care tips
l Clean your band and wrist regularly with a soap-free cleanser. l If your watch gets wet, remove and dry it completely after your activity. l Take your watch off from time to time. l If you notice skin irritation, remove your watch and contact customer support.
For more information, see fitbit.com/productcare. For more information, visit the Fitbit Wear & Care page.
Change the band
Sense 2 comes with a small band attached and an additional large, bottom band in the box. Both the top and bottom bands can be swapped with accessory bands, sold separately on fitbit.com. For band measurements, see “Band size” on page 71. Fitbit Sense, Fitbit Versa 3, and Fitbit Versa 4 bands are compatible with Sense 2.
Remove a band
1. Turn over Sense 2 and find the band latches.
2. To release the latch, slide the flat button toward the band.
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3. Gently pull the band away from the watch to release it.
4. Repeat on the other side.
Attach a band
To attach a band, press it into the end of the watch until you hear a click and it snaps into place. The band with the loops and peg attaches to the top of the watch.
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Basics
Learn how to manage settings, set a personal PIN code, navigate the screen, and check the battery level.
Navigate Sense 2
Sense 2 has a color AMOLED touchscreen display and 1 button. Navigate Sense 2 by tapping the screen, swiping side to side and up and down, or pressing the button. To preserve battery, the watch’s screen turns off when not in use, unless you turn on the always-on display setting. For more information, see “Adjust always-on display” on page 23.
Basic navigation
The home screen is the clock. l Swipe down to see quick settings l Swipe up to see your notifications. l Swipe left or right to see your tiles. l Press the button to open the apps menu or return to the clock face. l Press and hold your finger on the clock face to switch between saved clock faces.
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Button shortcuts
Use the button to quickly access contactless payments, voice assistant, quick settings, or your favorite apps.
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Press the button

Press the button to return to the clock face. From the clock face, press the button to open a list of the apps installed on your watch.

Press and hold the button

Hold the button for 1 second to activate a feature of your choice. The first time you use the button shortcut, select which feature it activates. To change which feature

activates when you hold the button, open the Settings app
tap Shortcut. Check that the long press shortcut is turned on Long press to select the app you want.

on your watch and , and then tap

Double-press the button

Double-press the button to open shortcuts to your voice assistant, quick settings, notifications, and contactless payment. Tap a shortcut to open it.

Quick settings
From the clock face, swipe down to access the quick settings.

18

Do Not Disturb Sleep Mode
Settings Screen Wake Brightness

When the do not disturb setting is on:

l Notifications, goal celebrations, and reminders are muted.

l The do not disturb icon illuminates settings.

in quick

You can’t turn on the do not disturb setting and sleep mode at the same time.
When the sleep mode setting is on:

l Notifications, goal celebrations, and reminders
are muted. l The screen’s brightness is set to dim. l The Always-On Display clock face is turned off. l The screen stays dark when you turn your wrist.

l The sleep mode icon illuminates settings.

in quick

Sleep mode turns off automatically when you set a sleep schedule. For more information, see “Adjust settings” on the next page.

You can’t turn on the do not disturb setting and sleep mode at the same time.
For additional settings, tap the Settings icon to open the Settings app. For more information, see “Adjust settings” on the next page.
When you set screen wake to Button & motion, the screen turns on each time you turn your wrist, press the button, or tap the screen.

When you set screen wake to Button only, press the button or tap the screen to turn on the display.
Adjust the screen brightness.

19

Always-On Display

Turn always-on display on or off. For more information, see “Adjust always-on display” on page 23.

Tiles
From the clock face, swipe right or left to navigate through your tiles. View your progress toward your daily goal, see a summary of today’s activity, check your heart rate throughout the day, view your latest sleep metrics, see the body responses your watch detected, set a timer, start an exercise, or check the weather forecast.
Customize your watch by changing which tiles are included and the order they’re shown in. For more information, see “Rearrange tiles” on page 27.

Adjust settings

Manage basic settings in the Settings app :

Display
Brightness
Screen wake
Screen timeout
Always-on display

Change the screen’s brightness. Change whether the screen turns on when you turn your wrist.
Adjust the amount of time before the screen turns off or switches to the always-on display clock face. Turn always-on display on or off. For more information, see “Adjust always-on display” on page 23.

Vibration & audio

Vibration

Adjust your watch’s vibration strength.

Microphone Choose whether your watch can access the microphone.

20

Notifications

Unread indicator

Choose if you want to see an icon at the bottom of the clock face when you have unread notifications.

Goal reminders
Active Zone Minutes goal

Turn Active Zone Minutes weekly goal notifications on or off.

Quiet modes
Focus mode Turn off notifications while using the Exercise app .

Do not disturb
Sleep mode

Turn off all notifications.
Adjust sleep mode settings, including setting a schedule for the mode to automatically turn on and off.

To set a schedule:

Alexa notifications

1. In the Sleep Mode section, tap Schedule mode. 2. Tap the start or end time to adjust when the mode turns on
and off. Swipe up or down to change the time, and tap the time to select it. Sleep mode automatically turns off at the time you schedule, even if you manually turned it on.
Turn Amazon Alexa notifications off.

Shortcut

Button long press

Choose the app or feature you want to open when you press and hold the button.

21

Voice assistant

Voice assistant Turn your voice assistant on or off.

Audio Feedback

Choose whether your voice assistant uses the speaker in your watch.

About Sense 2

System info See the version number of your watch’s installed firmware.

Regulatory info

See your watch’s regulatory information.

Factory reset Erase all device info. For more information, see “Erase Sense 2” on page 67.

Tap a setting to adjust it. Swipe up to see the full list of settings.

Check battery level
From the clock face, swipe down. The battery level is at the bottom of the screen.

When the battery is critically low (8% or lower): l The screen brightness is set to dim l The vibration strength is set to light l If you’re tracking an exercise with GPS, GPS tracking turns off l The EDA sensor turns off l Always- on display is turned off
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l You can’t use the voice assistant feature l You can’t use quick replies
Charge Sense 2 to use or adjust these features.

Set up device lock
To help keep your watch secure, turn on device lock in the Fitbit app, which prompts you to enter a personal 4-digit PIN code to unlock your watch. If you set up contactless payments on your watch, device lock is turned on automatically and you’re required to set a code. If you don’t use contactless payments, device lock is optional.
Turn on device lock or reset your PIN code in the Fitbit app:

From the Today tab Device Lock.

in the Fitbit app, tap the icon in the top left

For more information, see the related help article.

Sense 2 tile

Adjust always-on display
Turn on always-on display to show the time on your watch, even when you’re not interacting with the screen. Many clock faces and certain apps have an always- on display mode.

23

To turn always-on display on or off, swipe down from the clock face to open quick settings. Tap the always-on display icon .
Note that turning on this feature impacts your watch’s battery life. When always-on display is turned on, Sense 2 requires more frequent charging. Always-on display automatically turns off when your watch’s battery is critically low. For more information, see the related help article.
Turn off the screen
To turn off your watch’s screen when not in use, briefly cover the watch face with your opposite hand or turn your wrist away from your body.
24

Note that if you turn on the always-on display setting, the screen won’t turn off. 25

Clock Faces, Tiles, and Apps
The Fitbit Gallery offers apps and clock faces to personalize your watch and meet a variety of health, fitness, timekeeping, and everyday needs.

Change the clock face
The Fitbit Gallery offers a variety of clock faces to personalize your watch.

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Gallery Clocks tab.

3. Browse the available clock faces. Tap a clock face to see a detailed view.

4. Tap Install to add the clock face to Sense 2.

Save up to 5 clock faces to switch between them:

l When you select a new clock face, it’s automatically saved unless you already have 5 saved clock faces.

l To see your saved clock faces in the Fitbit app, tap the Today tab

icon

in the top left your device image Gallery. See your saved clock faces in

My Clock Faces.

l To remove a clock face, tap the clock face Remove clock face.

l To switch to a saved clock face, tap the clock face Select.

26

l To switch between your saved clock faces from your watch, press and hold your finger on your current clock face.

Rearrange tiles
From the clock face, swipe right or left to navigate through your tiles. To manage which tiles are included and the order they’re shown in:

1. From the Today tab

in the Fitbit app, tap the icon in the top left

device image Gallery.

your

2. In the My Tiles section of the Sense 2 tab, tap Manage.

l To rearrange the tiles, tap and hold the grid icon. Move the tile up or down in the list, then release it to place it in a new position.
l To delete a tile, press the X icon Remove. l To add a tile, tap Add tile tap the tile you want to add Install.

Note that you can only have a total of 8 tiles installed on your watch. If you already have 8 tiles installed, uninstall a tile before installing a new one.

Manage apps
Customize your watch with your favorite apps.
Open apps
From the clock face, press the button to see the apps installed on your watch. Your most recently used apps appear at the top. Swipe up to browse your apps. To open an app, tap it.
Remove apps
You can remove most apps installed on Sense 2:

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1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Gallery.

3. Tap the app you want to remove. You might need to swipe up to find it.

4. Tap Uninstall.

Reinstall apps

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Gallery Apps tab.

3. Browse the available apps. When you find one you want to install, tap it.

4. Tap Install to add the app to Sense 2.

For more information, see the related help article.

Update apps
Occasionally, you need to update apps installed on Sense 2. To update an app:

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Gallery. Find the app you want to update. You might need to swipe up to

find it.

3. Tap the Update button next to the app.

Adjust app settings and permissions
Many apps include options to adjust the notifications, allow certain permissions, and customize what it displays. Note that turning off any app permissions might cause the app to stop functioning.
To access these settings:

28

1. With your watch nearby, in the Fitbit app, tap the Today tab

icon in

the top left your device image.

2. Tap Gallery.

3. Tap the app or clock face whose settings you want to change. You might need

to swipe up to see some apps.

4. Tap Settings or Permissions.

5. Tap the back arrow when you’re done making changes.

29

Voice Assistant
Check the weather, set timers and alarms, control your smart home devices, and more by speaking to your watch.

Set up Amazon Alexa Built-in

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Amazon Alexa Sign in with Amazon.

3. Tap Get Started.

4. Log in to your Amazon account or create one if necessary.

5. Follow the on-screen instructions and read about what Alexa can do, and tap

Close to return to your device settings in the Fitbit app.

To change the language Alexa recognizes:

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Amazon Alexa.

3. Tap the current language to change it, or tap Logout to stop using Alexa on

your watch.

Interact with your voice assistant
1. Open the Alexa app on your watch. Note that the Fitbit app must be running in the background on your phone.
2. Say your request.

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You don’t need to say “Alexa” before speaking your request. For example:
l Set a timer for 10 minutes. l Set an alarm for 8:00 a.m. l What’s the temperature outside? l Remind me to make dinner at 6:00 p.m. l How much protein is in an egg? l Ask Fitbit to start a run. l Start a bike ride with Fitbit. *To ask Alexa to open the Exercise app on your watch, you must first set up the Fitbit skill for Alexa. For more information, see the related help article. These commands are currently available in English, German, French, Italian, Spanish, and Japanese.
Amazon Alexa isn’t available in all countries. For more information, see fitbit.com/voice.
Note that saying “Alexa” doesn’t activate the voice assistant on your watch–you must open the voice assistant app on your watch before the microphone turns on. The microphone turns off when you close your voice assistant, or when your watch’s screen turns off.
For added functionality, install the Amazon Alexa app on your phone. With the app, your watch can access additional Alexa skills.
For more information, see the related help article.
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Check Alexa alarms, reminders, and timers

1. Open the Alexa app on your watch.

2. Tap the alerts icon

and swipe up to view your alarms, reminders, and

timers.

3. Tap an alarm to turn it on or off. To adjust or cancel a reminder or timer, tap

the Alexa icon

and say your request.

Note that Alexa’s alarms and timers are separate from those you set in the Alarms

app or Timers app .

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Lifestyle
Use apps to stay connected to what you care about most. See “Clock Faces, Tiles, and Apps” on page 26 for instructions on how to add and delete apps. For more information, see the related help article.
Weather
See the weather in your current location, as well as 2 additional locations you choose, in the Weather app on your watch. Check the weather forecast in your current location in your tiles. From the clock face, swipe left or right until you reach the Weather tile. Tap the panel at the bottom of the screen to cycle between the current cloud cover, upcoming temperature forecast, chance of rain, and air quality. Tap anywhere else on the tile to open the Weather app , where you can see more details, as well as the weather forecast in 2 additional locations you choose. If the weather for your current location doesn’t appear, check that you turned on location services for the Fitbit app. If you change locations or don’t see updated data for your current location, sync your watch to see your new location and latest data in the Weather app or tile. Choose your unit of temperature in the Fitbit app. For more information, see the related help article.
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To add or remove a city:

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Gallery.

3. Tap the Weather app. You might need to swipe up to find it.

4. Tap Settings Add city to add up to 2 additional locations or tap Edit the

X icon to delete a location. Note that you can’t delete your current location.

Find Phone

Use the Find Phone app

to locate your phone.

Requirements:

l Your watch must be connected (“paired”) to the phone you want to locate. l Your phone must have Bluetooth turned on and be within 30 feet (10m) of
your Fitbit device. l The Fitbit app must be running in the background on your phone. l Your phone must be turned on.

To find your phone:

1. Open the Find Phone app on your watch. 2. Tap Find Phone. Your phone rings loudly. 3. When you locate your phone, tap Cancel to end the ringtone.

Google Maps

Get turn-by-turn directions on your wrist with the Google Maps app watch.
For more information, see the related help article.

on your

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Notifications from your phone
Sense 2 can show call, text, calendar, and app notifications from your phone to keep you informed. Keep your watch within 30 feet of your phone to receive notifications.

Set up notifications
Check that Bluetooth on your phone is on and that your phone can receive notifications (often under Settings Notifications). Then set up notifications:

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap Notifications.

3. Follow the on-screen instructions to pair your watch if you haven’t already.

Call, text, and calendar notifications are turned on automatically.

4. To turn on notifications from apps installed on your phone, including Fitbit and

WhatsApp, tap App Notifications and turn on the notifications you want to

see.

Note that if you have an iPhone, Sense 2 shows notifications from all calendars synced to the Calendar app. If you have an Android phone, Sense 2 shows calendar notifications from the calendar app you chose during setup.

For more information, see the related help article.

See incoming notifications
A notification causes your watch to vibrate. If you don’t read the notification when it arrives, you can check it later by swiping up on the clock face or by double-pressing the button and tapping the notifications icon.

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Manage notifications
Sense 2 stores up to 30 notifications, after which the oldest are replaced as you receive new ones.
To manage notifications:
l From the clock face, swipe up to see your notifications and tap any notification to expand it.
l To delete a notification, tap to expand it, then swipe to the bottom and tap Clear.
l To delete all notifications at once, swipe up until you reach the end of your notifications and tap Clear All.
l To exit the notifications screen, press the button or swipe down.

Turn off notifications
Turn off certain notifications in the Fitbit app, or turn off all notifications in quick settings on Sense 2. When you turn off all notifications, your watch won’t vibrate and the screen won’t turn on when your phone receives a notification.
To turn off certain notifications:

1. From the Today tab

in the Fitbit app on your phone, tap the icon in the

top left Sense 2 tile Notifications.

2. Turn off the notifications you no longer want to receive on your watch.

To turn off all notifications:

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1. From the clock face, swipe down to access quick settings. 2. Tap the do not disturb icon . All notifications, including goal celebrations
and reminders, are turned off.
Note that if you use the do not disturb setting on your phone, you don’t receive notifications on your watch until you turn off this setting.
Answer or reject phone calls
If paired to an iPhone or Android phone, Sense 2 lets you accept or reject incoming phone calls. To accept a call, tap the green phone icon on your watch’s screen. To reject a call, tap the red phone icon to send the caller to voicemail. The caller’s name appears if that person is in your contacts list; otherwise you see a phone number.
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Take on-wrist phone calls

To set up on-wrist calls, from the Today tab the icon in the top left your device image instructions below to set up on-wrist calls.

in the Fitbit app on your phone, tap On-Wrist Calls. Follow the

Android phone

Tap each setup requirement, and follow the on-screen instructions to accept and turn on the necessary pairing permissions and requests.

l Note that if you see a See Instructions button, you might be using an older version of the Fitbit app. Tap See Instructions, and use the “iPhone” below instructions to set up on-wrist calls.

iPhone

1. Tap Start Setup. 2. On your phone, tap Settings Bluetooth. Your phone scans for
available devices. 3. When you see Sense 2 Controls/Calls as an available device, tap it.
A number appears on your phone screen. 4. When the same number appears on your watch, tap Pair. 5. Return to the Fitbit app on your phone. Tap Done to complete
setup.

To answer a call using on-wrist mode:

1. When you receive a phone call, tap the green phone icon on your watch.
Note that your phone must be nearby with the Fitbit app running in the background. 2. Speak into your watch to talk to the other person. Their voice will come from the speaker on your watch.

l To adjust the volume of the speaker, tap the speaker icon

minus

icon or plus icon . Swipe right to return to the previous screen.

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l To mute yourself, tap the microphone icon unmute yourself.

. Tap the same icon to

l To switch to a keypad, tap the three dots icon right to return to the previous screen.

Keypad. Swipe

l To switch the call to your phone, tap the three dots icon

Phone.

Tap the watch icon to move the call back to your watch.

3. To end the call, tap the red phone icon .

For more information, see the related help article.

Respond to messages (Android phones)
Respond directly to text messages and notifications from certain apps on your watch with preset quick replies or by speaking your reply into Sense 2. Keep your phone nearby with the Fitbit app running in the background to respond to messages from your watch.
To respond to a message:
1. Open the notification you want to respond to. 2. Choose how to reply to the message:
l Tap the microphone icon to respond to the message using voice-totext. To change the language recognized by the microphone, tap Language. After you speak your reply, tap Send, or tap Retry to try again.
l Tap the text icon to respond to a message from a list of quick replies.
l Tap the emoji icon to respond to the message with an emoji.
For more information, including how to customize quick replies, see the related help article.

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Timekeeping
Alarms vibrate to wake or alert you at a time you set. Set up to 8 alarms to occur once or on multiple days of the week. You can also time events with the stopwatch or set a countdown timer.
Note that alarms and timers you set with a voice assistant are separate from the ones you set in the Alarms app and Timers app. For more information, see “Voice Assistant” on page 30.

Set an alarm

Set one-time or recurring alarms with the Alarms app your watch vibrates.

. When an alarm goes off,

When setting an alarm, turn on Smart Wake to allow your watch to find the best time to wake you starting 30 minutes before the alarm time you set. It avoids waking you during deep sleep so you’re more likely to wake up feeling refreshed. If Smart Wake can’t find the best time to wake you, your alarm alerts you at the set time.

For more information, see the related help article.

Dismiss or snooze an alarm
When an alarm goes off, your watch vibrates. To dismiss the alarm, tap the alarm icon . To snooze the alarm for 9 minutes, tap the snooze icon .
Snooze the alarm as many times as you want. Sense 2 automatically goes into snooze mode if you ignore the alarm for more than 1 minute.

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Use the timer or stopwatch
Time events with the stopwatch or set a countdown timer on your watch. You can run the stopwatch and countdown timer at the same time. If always-on display is on, the screen continues to display the stopwatch or countdown timer until it ends or you exit the app.
Time events with the stopwatch
1. On your watch, open the Timers app . 2. In the Stopwatch section, tap Start. 3. Tap the play icon to start the stopwatch. 4. Tap the pause icon to stop. 5. Tap the reset icon to reset the stopwatch.
Keep track of elapsed time with the countdown timer
1. On your watch, swipe left or right from the clock face to find the Timers tile. 2. Tap a timer to start it.
1. If the duration you want isn’t listed, tap the menu icon Add Timer. 2. Swipe up or down to set the timer. 3. Tap the time to start the timer. 3. You can navigate away from the tile while the timer is running. Return to the Timers tile to see the progress of your timer. Press the pause icon to pause
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the timer or the X icon to cancel it. Your device flashes and vibrates when the time allotted is done. 4. Tap the check mark icon or press the button to stop the alert. For more information, see the related help article.
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Activity and Wellness
Sense 2 continuously tracks a variety of stats whenever you wear it, including hourly activity, heart rate, and sleep. Data automatically syncs with the Fitbit app throughout the day.
See your stats
Swipe left or right from the clock face to find Today’s Activity tile, which shows your daily Active Zone Minutes, steps, calories, distance traveled, and floors climbed. For details and additional stats, tap the tile to open the Today app , which includes:
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Active Zone Minutes

Active Zone Minutes earned today and the number of Active Zone Minutes you’re currently earning per minute

Calories burned Calories burned today and progress toward your daily goal

Distance

Distance covered today and progress toward your daily goal

Exercise

Number of days you met your exercise goal this week

Floors

Floors climbed today and progress toward your daily goal

Heart rate

Current heart rate and heart-rate zone

Hourly activity The number of hours today you met your hourly activity goal

Menstrual health Information on the current stage of your menstrual cycle, if applicable

Mindfulness

The number of mindfulness sessions you completed this week and progress toward your goal

Oxygen Saturation

Your most recent resting SpO2 average

Readiness

Your daily readiness score

(Premium only)

Resting heart rate

Your resting heart rate

Sleep

Sleep duration and sleep score

Steps

Steps taken today and progress toward your daily goal

Stress management score

Your daily stress management score and the most recent mood log you submitted today

To reorder the stats, press and hold a row, then drag it up or down to change its position. Swipe a stat to the left to hide it. Tap Add stats at the bottom of the screen to add back any stats you hid.
Find your complete history and other information detected by your watch in the Fitbit app.

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Track a daily activity goal
Sense 2 tracks your progress toward a daily activity goal of your choice. When you reach your goal, your watch vibrates and shows a celebration.
Choose a goal
Set a goal to help you get started on your health and fitness journey. To begin, your goal is to take 10,000 steps per day. Choose to change the number of steps, or pick a different activity goal. For more information, see the related help article. Track progress toward your goal on Sense 2. For more information, see “See your stats” on page 43.
Track your hourly activity
Sense 2 helps you stay active throughout the day by keeping track of when you’re stationary and reminding you to move. Reminders nudge you to walk at least 250 steps each hour. You feel a vibration and see a reminder on your screen at 10 minutes before the hour if you haven’t walked 250 steps. When you meet the 250-step goal after receiving the reminder, you feel a second vibration and see a congratulatory message.
For more information, see the related help article.
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Track your sleep
Wear Sense 2 to bed to automatically track basic stats about your sleep, including your time asleep, sleep stages (time spent in REM, light sleep, and deep sleep), and sleep score (the quality of your sleep). Sense 2 also tracks your estimated oxygen variation throughout the night to help you uncover potential breathing disturbances, as well as your skin temperature to see how it varies from your personal baseline and SpO2 levels, which estimate the amount of oxygen in your blood. To see your sleep stats, sync your watch when you wake up and check the Fitbit app, or swipe left or right from your clock face to find the Sleep tile. For more information, see the related help article.
Set a sleep goal
To start, you have a sleep goal of 8 hours of sleep per night. Customize this goal to meet your needs. For more information, see the related help article.
Get insights into your long-term sleep behaviors
With a Premium subscription, understand and take steps to help improve your sleeping habits with a monthly sleep profile. Each month, wear your Fitbit device to sleep for at least 14 days out of the month. On the 1st of each month, check the Fitbit app to receive a breakdown of your sleep with 10 monthly metrics, along with a sleep animal that reflects long-term trends in your sleep behaviors. See your sleep animal on your device with the My Sleep Animal clock face. For more information, see the related help article.
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Learn about your sleep habits
With a Fitbit Premium subscription, see more details about your sleep score and how you compare to your peers, which can help you build a better sleep routine and wake up feeling refreshed.
For more information, see the related help article.

Track your skin temperature changes

Sense 2 logs your skin temperature each night to show how it varies from your personal baseline to help identify any changes from your baseline. Insight into your night-time skin temperature variation can help you understand changes in your body and spot trends. To view changes in your nightly sleeping skin temperature,

open the Fitbit app on your phone. From the Today tab tile.

, tap the Temperature

You see a graph of your skin temperature variations, along with any core temperature readings you manually logged.

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Note that you must wear Sense 2 to sleep for 3 nights before you see your personal skin temperature baseline. For more information, see the related help article. Please note that this feature is not available in all markets.
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Track your period
Add the Menstrual health tile to your watch to check your cycle or log a period from your watch. Swipe right or left from the clock face to find the Menstrual health tile. Your current cycle is shown. Tap Log and follow the prompts to log your period.
For more information, see the related help article.
Manage stress
Track and manage your stress with mindfulness features.
Use the EDA Scan app
The EDA Scan app on Sense 2 detects electrodermal activity which may indicate your body’s response to stress. Because your sweat level is controlled by the sympathetic nervous system, these changes can show meaningful trends about how your body responds to stress. Choose between a 2-minute quick scan or a guided session.
1. Open the EDA Scan app . 2. Choose Quick Reset for a 2-minute scan or Guided Session for a scan lasting
up to 60 minutes. 3. If you chose Guided Session, a notification appears to open the Fitbit app.
Choose a mindfulness session, and tap Play Audio. Note: Premium subscribers can access additional guided meditations in the Fitbit app. 4. Place your hand on top of the screen. Note that your palm must touch all 4 sides of the metal frame. 5. Remain still during the scan. Keep your hand on Sense 2 for at least 2 minutes. 6. If you remove your hand, the scan pauses. To resume, place your hand back on the screen. To end the session, tap End. 7. Sense 2 buzzes after the scan is complete. Tap Log It to reflect on how you feel, or tap Skip. 8. Swipe down to see the summary of your scan, including your number of EDA responses, heart rate at the start and end of the session, and reflection if you logged a reflection.
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9. To see more details about your session, open the Fitbit app on your phone. From the Today tab , tap the Mindfulness tile Your Journey.
For more information, see the related help article.
Practice guided breathing
The Relax app on Sense 2 provides personalized guided breathing sessions to help you find moments of calm throughout the day. All notifications are automatically disabled during the session.
1. Open the Relax app . 2. The 2-minute session is the first option. Tap the gear icon to change the
duration of the session or turn off the optional vibration. 3. Tap the play icon or Start to begin the session. Follow the on-screen
instructions.
4. When the session ends, tap Log It to reflect on how you feel, or tap Skip to skip this step.
5. View your summary, and tap Done to close the app. After the exercise, a summary appears that shows your alignment (how closely you followed the breathing prompt), your heart rate at the start and end of the session, and how many days you completed a guided breathing session this week. For more information, see the related help article.
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Check your stress management score
Based on your heart rate, exercise, and sleep data, your stress management score helps you see if your body is showing signs of stress on a daily basis. The score ranges from 1 to 100, where a higher number means your body is showing fewer signs of physical stress. To see your daily stress management score, wear your watch to sleep, and open the Fitbit app on your phone the next morning. From the
Today tab , tap the Stress Management tile.
Log how you feel throughout the day to get a clearer picture of how your mind and body respond to stress. With a Fitbit Premium subscription, see details about your score breakdown.
For more information, see the related help article.
Track your body responses
Sense 2 uses a continuous EDA sensor to identify patterns of stress. When your watch detects a body response, you see a notification asking you to reflect on your emotions.
To add your reflection:
1. Tap Open on the notification. 2. Tap the emotion that most closely fits your mood during the time specified or
tap Skip to dismiss the notification. To see past body responses:
1. From the clock face, swipe right or left until you reach the Body responses tile. The total time today your watch detected a body response is shown at the top. Purple segments represent the duration of the body response.
2. Tap Check in to explore ways to manage your stress. Find shortcuts to the EDA Scan app and Relax app, reflect on your current mood, start a walk in the Exercise app, or learn more about body responses.
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For details and a weekly summary of your top moods and body responses, check

the Stress Management tile related help article.

in the Fitbit app. For more information, see the

Advanced health metrics
Know your body better with health metrics in the Fitbit app. This feature helps you view key metrics tracked by your Fitbit device over time so that you can see trends and assess what’s changed.
Metrics include:
l Oxygen saturation (SpO2) l Skin temperature variation l Heart-rate variability l Resting heart rate l Breathing rate
Note: This feature is not intended to diagnose or treat any medical condition and should not be relied on for any medical purposes. It is intended to provide information that can help you manage your well-being. If you have any concerns about your health, please talk to a healthcare provider. If you believe you are experiencing a medical emergency, call emergency services.
For more information, see the related help article.

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Exercise and Heart Health

Automatically track exercise or track activity with the Exercise app time stats and a post-workout summary.

to see real-

Check the Fitbit app to share your activity with friends and family, see how your overall fitness level compares to your peers, and more.

Track your exercise automatically
Sense 2 automatically recognizes and records many high-movement activities which are at least 15 minutes long. See basic stats about your activity in the Fitbit

app on your phone. From the Today tab , tap the Exercise tile

.

Choose to turn on walk, run, or bike ride detect to automatically start the Exercise app when your watch recognizes a walk, run, and bike ride. To turn this setting on:

1. Open the Exercise app . 2. Tap the walk, run, or bike ride option. 3. Swipe up and turn on Walk Detect, Run Detect, or Bike Detect. The next time
your watch detects this workout type, the Exercise app automatically opens.
Note that if you leave this setting off, basic stats about your walks, runs, and bike rides are still recorded in the Fitbit app.
For more information, see the related help article.

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Track and analyze exercise with the Exercise app

Track specific exercises with the Exercise app

on Sense 2 to see real-time stats,

including heart-rate data, calories burned, elapsed time, and a post-workout

summary on your wrist. For complete workout stats, and a workout intensity map if

you used GPS, tap the Exercise tile in the Fitbit app.

To track an exercise:

1. On Sense 2, open the Exercise app

and swipe to find an exercise. Your

most recently used exercises appear at the top. Tap Other exercises to find a

complete list of exercises. You can also ask Alexa to open the Exercise app or

start tracking a workout. For more information, see “Interact with your voice

assistant” on page 30.

2. Tap the exercise to choose it. If the exercise uses GPS, you can wait for the

signal to connect, or start the exercise and GPS will connect when a signal is

available. Note that GPS can take a few minutes to connect.

3. Tap the play icon to begin the exercise, or swipe up to choose an exercise
goal or adjust the settings. For more information on the settings, see “Customize your exercise settings” on the facing page. 4. Tap or swipe the large stat to scroll through your real-time stats. To pause

your workout, press the button or swipe up and tap the pause icon . Press
the button again or tap the resume icon to resume your workout. 5. When you’re done with your workout, swipe up and tap End. Your workout
summary appears. 6. Tap Resume to resume your workout, Start new to start a new workout, or
Done to close the summary screen.

Notes:

l If you set an exercise goal, your watch alerts you when you’re halfway to your goal and when you reach the goal.
l If the exercise uses GPS, “GPS connecting…” appears at the top of the screen. When the screen says “GPS connected” and Sense 2 vibrates, GPS is
connected. During the exercise, the GPS icon rotates if your watch is

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searching for a GPS signal. A stationary GPS icon indicates GPS is connected. A red GPS icon indicates a GPS signal couldn’t be found.
Dynamic GPS on Sense 2 allows the watch to set the GPS type at the start of the exercise. Sense 2 attempts to connect to the GPS sensors on your phone to preserve battery life. If your phone isn’t nearby or moving, Sense 2 uses built-in GPS.
Customize your exercise settings
Customize settings for each exercise type on your watch. Settings include:
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Always-on Display

Keep the screen on during exercise

Auto-Stop

Automatically pause a run, walk, or bike ride when you stop moving

GPS

Track your route using GPS

Heart Zone Receive notifications when you hit target heart-rate zones during Notifications your workout. For more information, see the related help article

Interval

Adjust the move and rest intervals used during interval training

Pool Length Set the length of your pool

Run /Walk/Bike Detect

Automatically open the exercise app when your watch detects a run, walk, or bike ride.

Laps

Receive notifications when you reach certain milestones during your workout

Show Stats Choose what stats you want to see when tracking an exercise

Settings vary based on the exercise. To adjust the settings for each type of exercise:
1. On Sense 2, open the Exercise app . 2. Tap the exercise you want to adjust. 3. Swipe up through the list of settings. 4. Tap a setting to adjust it. 5. When you’re done, swipe down until you see the play icon .
Check your workout summary
After you complete a workout, Sense 2 shows a summary of your stats.
Check the Exercise tile in the Fitbit app to see additional stats and a workout intensity map if you used GPS.

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Check your heart rate
Sense 2 personalizes your heart-rate zones using your heart rate reserve, which is the difference between your maximum heart rate and your resting heart rate. To help you target the training intensity of your choice, check your heart rate and heart-rate zone on your watch during exercise. Sense 2 notifies you when you enter a heart-rate zone.
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Icon

Zone
Below Zone

Calculation

Description

Below 40% of your heart rate reserve

Below the fat burn zone, your heart beats at a slower pace.

Fat Burn Zone

Between 40% and 59% of your heart rate reserve

In the fat burn zone, you’re likely in a moderate activity such as a brisk walk. Your heart rate and breathing might be elevated, but you can still carry on a conversation.

Cardio Zone

Between 60% and 84% of your heart rate reserve

In the cardio zone, you’re likely doing a vigorous activity such as running or spinning.

Peak Zone

Greater

In the peak zone, you’re likely

than 85% of doing a short, intense activity that

your heart improves performance and speed,

rate

such as sprinting or high-intensity

reserve

interval training.

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Custom heart-rate zones
Instead of using these heart-rate zones, you can create a custom zone in the Fitbit app to target a specific heart-rate range. For more information, see the related help article.
Earn Active Zone Minutes
Earn Active Zone Minutes for time spent in the fat burn, cardio, or peak heart-rate zones. To help you maximize your time, you earn 2 Active Zone Minutes for each minute you’re in the cardio or peak zones.
1 minute in the fat burn zone = 1 Active Zone Minute 1 minute in the cardio or peak zones = 2 Active Zone Minutes A few moments after you enter a different heart-rate zone during your exercise, your watch buzzes so that you know how hard you’re working. The number of times your watch vibrates indicates which zone you’re in:
1 buzz = fat burn zone 2 buzzes = cardio zone 3 buzzes = peak zone To start, your weekly goal is set to 150 Active Zone Minutes. You’ll receive notifications as you reach your goal. For more information, see the related help article.
Receive heart-rate notifications
Stay informed when Sense 2 detects that your heart rate is outside of your high or low thresholds when you appear to be inactive for at least 10 minutes.
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To turn this feature off or adjust the thresholds:

1. From the Today tab

in the Fitbit app on your phone, tap the icon in the

top left Sense 2 tile.

2. Tap High & low heart rate.

3. Turn High heart rate notification or Low heart rate notification on or off, or tap

Custom to adjust the threshold.

View past heart-rate notifications, log possible symptoms and causes, or delete notifications in the Fitbit app. For more information, see the related help article.

Check your daily readiness score
Understand what’s best for your body with the daily readiness score, available with a Fitbit Premium subscription. Your score ranges from 1 to 100, based on your activity, sleep, and heart-rate variability. A high score means you’re ready to exercise, while a low score suggests you should focus on recovery.
When you check your score, you also see a breakdown of what impacted your score, a personalized activity goal for the day, and recommended workouts or recovery sessions.

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To see your daily readiness score, add the Readiness tile to your watch. After you wear your watch for a full day (at least 14 hours), including to sleep at night, swipe right or left from the clock face on your watch to find your score on the Readiness tile. For more information, see the related help article.
View your cardio fitness score
View your overall cardiovascular fitness in the Fitbit app. See your cardio fitness score and cardio fitness level, which shows how you compare to your peers. In the Fitbit app, tap the Heart-rate tile and swipe left on your heart-rate graph to see your detailed cardio fitness stats. For more information, see the related help article.
Share your activity
After you complete a workout, open the Fitbit app to share your stats with friends and family. For more information, see the related help article.
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Contactless Payments
Sense 2 includes a built-in NFC chip, which lets you use your credit and debit cards on your watch.

Use credit and debit cards
Set up Fitbit Pay or Google Pay in the Fitbit app, and use your watch to make purchases in stores that accept contactless payments.
We’re always adding new locations and card issuers to our list of partners. To see if your payment card works on your Fitbit device, see:
l Fitbit Pay: fitbit.com/fitbit-pay/banks l Google Pay: fitbit.com/global/us/technology/google-apps/banks
For more information about the transition from Fitbit Pay to Google Pay, see the related help article.
Set up contactless payments
To use contactless payments, add at least 1 credit or debit card from a participating bank to the Fitbit app. The Fitbit app is where you add and remove payment cards, set a default card for your watch, edit a payment method, and review recent purchases.

1. From the Today tab

in the Fitbit app, tap the icon in the top left Sense

2 tile.

2. Tap the Google Pay tile.

3. Follow the on-screen instructions to add a payment card. In some cases, your

bank might require additional verification. If you’re adding a card for the first

time, you might be prompted to set a 4-digit PIN code for your watch. Note

that you also need passcode protection enabled for your phone.

4. After you add a card, follow the on-screen instructions to turn on notifications

for your phone (if you haven’t already done so) to complete the setup.

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Make purchases
Make purchases using your Fitbit device at any store that accepts contactless payments. To determine if the store accepts contactless payments, look for the symbol below on the payment terminal:

All customers except those in Australia:

1. Open the Google Wallet

or Fitbit Pay app

on your watch. Note that

you can quickly access your payment app by double-pressing the button on

your watch.

2. If prompted, enter your 4-digit watch PIN code. Your default card appears on

the screen.

3. To pay with your default card, hold your wrist near the payment terminal. To pay with a different card, swipe to find the card you want to use, and hold your wrist near the payment terminal.
Customers in Australia: 1. If you have a credit or debit card from an Australian bank, hold your watch near the payment terminal to pay. If your card is from a bank outside of Australia, or if you wish to pay with a card that is not your default card, complete steps 1-3 in the section above.
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2. If prompted, enter your 4-digit watch PIN code. 3. If the purchase amount exceeds $100 AU, follow the instructions on the
payment terminal. If prompted for a PIN code, enter the PIN code for your card (not your watch).
When the payment succeeds, your watch vibrates and you see a confirmation on the screen.
If the payment terminal doesn’t recognize your Fitbit device, make sure the watch face is near the reader and that the cashier knows you’re using a contactless payment.

For added security, you must wear Sense 2 on your wrist to use contactless payments.

For more information, see the related help article.

Change your default card
Google Pay

1. From the Today tab

in the Fitbit app, tap the icon in the top left

2 tile.

2. Tap the Google Pay tile.

3. Tap the card you want to set as the default option.

4. Tap Details.

5. Tap Make default for contactless on watch.

Fitbit Pay

Sense

1. From the Today tab

in the Fitbit app, tap the icon in the top left

2 tile.

2. Tap the Wallet tile.

3. Find the card you want to set as the default option.

4. Tap Set as Default on Sense 2.

Sense

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Pay for transit
Use contactless payments to tap on and off at transit readers that accept contactless credit or debit card payments. To pay with your watch, follow the steps listed in “Use credit and debit cards” on page 62. Pay with the same card on your Fitbit watch when you tap the transit reader at the start and end of your trip. Make sure your device is charged before beginning your trip.
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Update, Restart, and Erase
Some troubleshooting steps may require you to restart your watch, while erasing it is useful if you want to give Sense 2 to another person. Update your watch to receive the latest firmware.
Update Sense 2
Update your watch to get the latest feature enhancements and product updates. When an update is available, a notification appears in the Fitbit app. After you start the update, follow the progress bars on Sense 2 and in the Fitbit app until the update is complete. Keep your watch and phone close to each other during the update.
Updating Sense 2 may be demanding on the battery. We recommend plugging your watch into the charger before starting an update.
For more information, see the related help article.
Restart Sense 2
If you can’t sync Sense 2 or you have trouble with tracking your stats or receiving notifications, restart your watch from your wrist: To restart your watch, press and hold the button for 10 seconds until you see the Fitbit logo on the screen, and then release the button. Restarting your watch doesn’t delete any data.
Sense 2 has small holes on the device for the altimeter, speaker, and microphone. Don’t attempt to restart your device by inserting any items, such as paper clips, into these holes as you can damage Sense 2.
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Shutdown Sense 2

To turn off your watch, open the Settings app

Shut down.

To turn on your watch, press the button.

For information about how to store Sense 2 long term, see the related help article.

Erase Sense 2
If you want to give Sense 2 to another person or wish to return it, first clear your personal data:

On Sense 2, open the Settings app

About Sense 2 Factory reset.

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Troubleshooting
If Sense 2 isn’t working properly, see our troubleshooting steps below.
Heart-rate signal missing
Sense 2 continuously tracks your heart rate while you’re exercising and throughout the day. If the heart-rate sensor on your watch has difficulty detecting a signal, dashed lines appear.
If your watch doesn’t detect a heart-rate signal, make sure you’re wearing your watch correctly, either by moving it higher or lower on your wrist or by tightening or loosening the band. Sense 2 should be in contact with your skin. After holding your arm still and straight for a short time, you should see your heart rate again. For more information, see the related help article.
GPS signal missing
Environmental factors including tall buildings, dense forest, steep hills, and thick cloud cover can interfere with your watch’s ability to connect to GPS satellites. If your watch is searching for a GPS signal during an exercise, you’ll see the GPS icon
rotating at the top of the screen.
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For best results, wait for Sense 2 to find the signal before you start your workout. If Sense 2 loses the GPS signal during your workout, the GPS icon appears red . Your watch will attempt to reconnect.
For more information, see the related help article.
Other issues
If you experience any of the following issues, restart your watch: l Won’t sync l Won’t respond to taps, swipes, or button press l Won’t track steps or other data l Won’t show notifications
For instructions, see “Restart Sense 2” on page 66.
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General Info and Specifications
Sensors and Components
Fitbit Sense 2 contains the following sensors and motors:
l Multi-path optical heart rate tracker l Electrical sensor to measure skin conductance (cEDA) for stress detection l Multipurpose electrical sensors compatible with the ECG app and EDA Scan
app l Red and infrared sensors for oxygen saturation (SpO2) monitoring l Gyroscope l Altimeter, which tracks altitude changes l 3-axis accelerometer, which tracks motion patterns l On-wrist skin temperature sensor l Ambient light sensor l NFC l Built-in GPS receiver + GLONASS, which tracks your location during a workout l Vibration motor l Speaker l Microphone l WiFi (deactivated, cannot be turned on)
Materials
The band that comes with Sense 2 is made of a flexible, durable elastomer material similar to that used in many sports watches.
The housing and buckle on Sense 2 are made of aluminum. While aluminum can contain traces of nickel, which can cause an allergic reaction in someone with nickel sensitivity, the amount of nickel in all Fitbit products meets the European Union’s stringent Nickel Directive.
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Wireless technology
Sense 2 contains a Bluetooth 5.0 radio transceiver and NFC chip.

Haptic feedback
Sense 2 contains a vibration motor for alarms, goals, notifications, reminders, and apps.

Battery
Sense 2 contains a rechargeable lithium-polymer battery.

Memory
Sense 2 stores your data, including daily stats, sleep information, and exercise history, for 7 days. See your historical data in the Fitbit app.

Display
Sense 2 has a color AMOLED display.

Band size
Band sizes are shown below. Note that accessory bands sold separately may vary slightly.

Small band Fits a wrist between 5.5 – 7.1 inches (140 mm – 180 mm) in circumference

Large band

Fits a wrist between 7.1 – 8.7 inches (180 mm – 220 mm) in circumference

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Environmental conditions

Operating temperature

14° to 113° F (-10° to 45° C)

Non-operating temperature -4° to 14° F (-20° to -10° C)

113° to 140°F (45° to 60° C)

Charging temperature

32° to 95° F (0° to 35° C)

Water resistance

Water resistant up to 50 meters

Maximum operating altitude 28,000 feet (8,534 m)

Learn more
To learn more about your watch, how to track your progress in the Fitbit app, and how to build healthy habits with Fitbit Premium, visit help.fitbit.com.
Return policy and warranty
Find warranty information and the fitbit.com return policy on our website.

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Regulatory and Safety Notices
Notice to the User: Regulatory content for certain regions can also be viewed on your device. To view the content:
Settings About Sense 2 Regulatory info
UstSaAte:mFeednet ral Communications Commission (FCC)
Model FB521: FCC ID: XRAFB521
Notice to the User: The FCC ID can also be viewed on your device. To view the content:
Settings About Sense 2 Regulatory info Supplier’s Declaration of Conformity
Unique Identifier: FB521 Responsible Party U.S. Contact Information Google LLC 1600 Amphitheatre Parkway Mountain View, CA 94043 FCC Compliance Statement (for products subject to Part 15) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
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1. This device may not cause harmful interference and 2. This device must accept any interference, including interference that may
cause undesired operation of the device.
FCC Warning
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
l Reorient or relocate the receiving antenna. l Increase the separation between the equipment and receiver. l Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected. l Consult the dealer or an experienced radio/TV technician for help.
This device meets the FCC and IC requirements for RF exposure in public or uncontrolled environments.
Note: This device is intended only for use as a wrist-worn device
Canada: Industry Canada (IC) statement
Model/Modèle FB521
IC: 8542A-FB521
Notice to the User: The IC ID can also be viewed on your device. To view the content:
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Settings About Sense 2 Regulatory info Avis à l’utilisateur: L’ID de l’IC peut également être consulté sur votre appareil. Pour voir le contenu:
Paramètres À propos Sense 2 Informations réglementaires This device meets the IC requirements for RF exposure in public or uncontrolled environments. Cet appareil est conforme aux conditions de la IC en matière de RF dans des environnements publics ou incontrôlée IC Notice to Users English/French in accordance with current issue of RSS GEN: This device complies with Industry Canada license exempt RSS standard(s). Operation is subject to the following two conditions:
1. this device may not cause interference, and 2. this device must accept any interference, including interference that may
cause undesired operation of the device. Cet appareil est conforme avec Industrie Canada RSS standard exempts de licence (s). Son utilisation est soumise à Les deux conditions suivantes:
1. cet appareil ne peut pas provoquer d’interférences et 2. cet appareil doit accepter Toute interférence, y compris les interférences qui
peuvent causer un mauvais fonctionnement du dispositif
European Union (EU)
Notice to the User: Regulatory content for this region can also be viewed on your device. To view the content:
Settings About Sense 2 Regulatory Info Frequency Bands and Power
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Data given here is the maximum radio-frequency power transmitted in the frequency band(s) in which the radio equipment operates. Bluetooth 2400-2483.5 MHz < 13 dBm EIRP NFC 13.56 MHz < 42 dBuA/m at 10m Simplified EU Declaration of Conformity Hereby, Fitbit LLC declares that the radio equipment type Model FB521 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: www.fitbit.com/safety Vereinfachte EU-Konformitätserklärung Fitbit LLC erklärt hiermit, dass die Funkgerättypen Modell FB521 die Richtlinie 2014/53/EU erfüllen. Der vollständige Wortlaut der EU-Konformitätserklärungen kann unter folgender Internetadresse abgerufen werden: www.fitbit.com/safety Declaración UE de Conformidad simplificada Por la presente, Fitbit LLC declara que el tipo de dispositivo de radio Modelo FB521 cumple con la Directiva 2014/53/UE. El texto completo de la declaración de conformidad de la UE está disponible en la siguiente dirección de Internet: www.fitbit.com/safety Déclaration UE de conformité simplifiée Fitbit LLC déclare par la présente que les modèles d’appareils radio FB521 sont conformes à la Directive 2014/53/UE. Les déclarations UE de conformité sont disponibles dans leur intégralité sur le site suivant : www.fitbit.com/safety Dichiarazione di conformità UE semplificata Fitbit LLC dichiara che il tipo di apparecchiatura radio Modello FB521 è conforme alla Direttiva 2014/53/UE. Il testo completo della dichiarazione di conformità UE è disponibile al seguente indirizzo Internet: www.fitbit.com/safety
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Argentina
C-27776
Australia and New Zealand
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Settings About Sense 2 Regulatory info
Ghana
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Indonesia
76114/SDPPI/2021 3788
82058/SDPPI/2022 3788
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82061/SDPPI/2022 3788

Israel

5512857.

Japan
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Settings About Sense 2 Regulatory info
201-220211 201-220279

Kingdom of Saudi Arabia
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Malaysia
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Mexico
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La operación de este equipo está sujeta a las siguientes dos condiciones: 1. Es posible que este equipo o dispositivo no cause interferencia perjudicial y 2. Este equipo o dispositivo debe aceptar cualquier interferencia, incluyendo la que pueda causar su operación no deseada
IFT#: RCPFIFB22-1829
Morocco
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AGREE PAR L’ANRT MAROC Numéro d’agrément: MR00032401ANRT2022
Date d’agrément: 25/03/2022
Nigeria
Connection and use of this communications equipment is permitted by the Nigerian Communications Commission.
Oman
TRA/TA-R/13573/22 D172338
Paraguay
NR: 2022-04-I-0258
Philippines
Type Accepted No: ESD-RCE-2230108
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Serbia
Singapore
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South Korea
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Taiwan
NCC Sense 2
Translation: Notice to the User: You can obtain the Taiwan NCC verification label number and warnings through the following steps:
Settings About Sense 2 Regulatory info
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Translation:
Low Power Warning:
For the low-power radio frequency equipment that has obtained the verification certificate, the company, organization or user shall not change the frequency, increase the power or change the features and functions of the original design without approval. The use of low-power radio frequency equipment shall not affect flight safety or interfere with legal communications. If any interference is detected, the device should be disabled immediately and the interference removed before continuing use. The aforesaid legal communication refers to the radio communication operated in accordance with the provisions of the Telecommunications Management Act. Low power radio frequency equipment must accept interference from legal communication or radio wave radiated electrical equipment for industrial, scientific and medical use.

l l l l
Translation:
Battery warning:
This device uses a lithium-ion battery.
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If the following guidelines are not followed, the life of the lithium-ion battery in the device may be shortened or there is a risk of damage to the device, fire, chemical burn, electrolyte leakage and / or injury.
l Do not disassemble, puncture or damage the device or battery. l Do not remove or try to remove the battery that the user cannot replace. l Do not expose the battery to flames, explosions or other hazards. l Do not use sharp objects to remove the battery. Vision Warning l l 30 10 2 2 1
Translation: Excessive use may damage vision Warning:
l Excessive use may damage vision Attention:
l Rest for 10 minutes after every 30 minutes. l Children under 2 years old should stay away from this product. Children 2
years old or more should not see the screen for more than 1 hour a day.
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Taiwan RoHS 84

Thailand
United Arab Emirates
United Kingdom
Notice to the User: Regulatory content for this region can also be viewed on your device. To view the content:
Settings About Sense 2 Regulatory Info Simplified UK Declaration of Conformity
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Hereby, Fitbit LLC declares that the radio equipment type Model FB521 is in compliance with Radio Equipment Regulations 2017. The full text of the UK declaration of conformity is available at the following internet address: www.fitbit.com/legal/safety-instructions Frequency Bands and Power Data given here is the maximum radio-frequency power transmitted in the frequency band(s) in which the radio equipment operates. Bluetooth 2400-2483.5 MHz < 13 dBm EIRP NFC 13.56 MHz < 42 dBuA/m at 10m
Vietnam
About the Battery
This unit contains a non-replaceable internal lithium-ion battery. The battery can burst or explode, releasing hazardous chemicals. To reduce the risk of fire or burns, do not disassemble, crush, puncture or dispose of in fire or water.
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CAUTION: Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions.
l The battery must be recycled or disposed of properly l Use the battery only in the specified equipment l Do not leave the battery in an extremely high temperature environment that
may result in an explosion or the leakage of flammable liquid or gas l Do not subject battery to extremely low air pressure that may result in an
explosion or the leakage of flammable liquid or gas
IP Rating
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Settings About Sense 2 Regulatory Info
Model FB521 has a water resistance rating of IPX8 under IEC standard 60529, up to a depth of 50 meters.
Model FB521 has a dust ingress rating of IP6X under IEC standard 60529 which indicates the device is dust-tight.
Safety Statement
This equipment has been tested to comply with safety certification in accordance with the specifications of: IEC 60950-1:2005, AMD 1:2009, AND2:2013, EN 609501:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013, IEC 62368-1:2014, EN 623681:2014 + A11:2017, IEC 62368-1: 2020 + A11: 2020, EN62368-1: 2018, EN IEC 623681:2020 + A11:2020, BS EN 62368-1: 2014 + A11: 2017, BS EN IEC 62368-1:2020 + A11:2020.
Regulatory Markings
Device regulatory markings can be viewed on your device by removing the band. Markings are located in the band attach area.
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Band Pocket View
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