Fitbit Sense 2
Quick details
Released
September 2022
Dimensions
40.5 x 40.5 x 11.2 mm
Operating system
FitbitOS
Display 1.58 inches AMOLED
Battery life 6+ days; up to 5 hours with continuous GPS
Water resistance 5 ATM
GPS Yes
Sensors Optical heart rate, cEDA, ECG/EDA electrical sensors, SpO2, altimeter, accelerometer, skin temperature, ambient light, GPS + GLONASS, NFC
Technical specifications
General
Release date 2022-09-29
Product type Smartwatch
Physical size 40.5 x 40.5 x 11.2 mm
Weight 37.64 g
Material Aluminium watch case and buckle; flexible sport-style band
Water resistance 5 ATM
Color options Shadow Grey / Graphite Aluminum, Lunar White / Platinum Aluminum, Blue Mist / Soft Gold Aluminum
Display type AMOLED
Display size 1.58 inches
Display resolution 336 x 336 pixels
Display brightness Up to 1,000 nits
Display protection Corning Gorilla Glass 3
Battery Rechargeable lithium-polymer battery; 162 mAh
Battery life 6+ days; up to 5 hours with continuous GPS
Charging USB. Charge time (0-100%): 2 hours. 12 minutes to get one day of battery life
Charging time About 2 hours to 100%; 12 minutes for 1 day
Sensors
GNSS type Built-in GNSS + connected GPS
GPS Yes
GALILEO No
GLONASS Yes
QZSS No
Beidou No
Accelerometer Yes
Gyroscope Yes
Barometric altimeter Yes
Compass No
Geomagnetic No
Ambient light sensor Yes
Optical heart rate Yes
Electrical heart rate Yes
SpO2 Yes
Temperature Yes
Galvanic skin response Yes
Microphone Yes
Speakers Yes
Vibration motor Yes
Health & activity tracking
Steps Yes
Distance Yes
Calories burned Yes
Floors Yes
Sports tracking 40+ Goal-Based Exercise Modes
Sleep Yes
Heart rate Yes
HRV Yes
Stress Yes
Blood oxygen Yes
Respiration rate Yes
Skin temperature Yes
ECG Yes
Blood pressure No
Body composition No
Glucose No
Hydration level No
UV exposure No
Calorie intake No
Daily Readiness Yes
Cardio Load Yes
Target Load Yes
Hyperglycemia risk assessment No
Arterial stiffness detection No
Pulse wave arrhythmia analysis Yes
Daily smart features
Smartphone compatibility Android 11+; iOS 16.4+
Operating system at launch FitbitOS
Processor Ambiq Apollo4 Plus, ARM Cortex-M4 at 96-192 MHz
RAM 2.75 MB on-chip SRAM
Data retention 7 days detailed data; 30 days daily totals
Bluetooth Yes
Wi-Fi Present but deactivated; cannot be turned on
NFC / connected pay Yes
UWB No
Cellular No
Smartphone notifications Yes
Bluetooth calling Yes
Smartphone music control Yes (YouTube Music controls on paired phone; no offline playback)
On-board music storage No
Voice assistant Amazon Alexa
Links
These technical specs are correct to the best of our knowledge at the time of publishing.
