Features
  STRESS & SLEEP
  All-day body-response tracking
Stress notifications EDA Scan app for stress management
Reflections  Stress Management
Score  Relax breathing sessions 
Sleep tracking & sleep stages Sleep
Profile  Sleep Score Smart Wake
alarm  .  
  HEALTH  
SpO2 (Blood Oxygen) Tracking Irregular heart rhythm
notifications ECG app for heart rhythm assessment 
Resting heart rate  High &
low heart rate notifications Heart rate variability 
Skin temperature sensor  Breathing
rate  Wellness Report 
Menstrual health tracking  .
    FITNESS
  Heart Rate Tracking 
Daily Readiness Score  Active Zone
Minutes  Built-in GPS 
Exercise modes  Steps, distance
& calories  Water
resistant  Cardio Fitness Score 
Automatic exercise tracking  Workouts on
your phone  .  
  SMARTS & MORE
  Call, text and app notifications
On-wrist Bluetooth® calls 
Google Maps  Google Wallet 
Fitbit Pay  Find My Phone 
Always-on display mode  Do not disturb
& sleep mode  Compatible with iOS
and Android devices  Slim Design 
6+ Day Battery  Fast
charging  Clock faces &
accessories  Colour touchscreen 
Fitbit Premium Membership  .
     
Specs   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 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 Resistance
  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
aluminium 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: -10° to 45° C .
    Syncing
  Google account will be
required.  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 9 or higher. 
Syncing range: Up to 9m → Certain features like
smartphone notifications may require Android 9+. 
→ Syncing requires Bluetooth® LE, an
internet connection and location permissions granted on the phone .
    Band Size
  Small: Fits wrist
129mm - 175mm in circumference Large: Fits wrist
158mm - 209mm .  
  Dimensions  
40.5mm l x 40.5mm w x 12.3mm h .