Apple Watch Series 11 vs Fitbit Sense 2 specs comparison
Apple Watch Series 11 is the much more complete smartwatch, with better apps, connectivity and overall functionality. Fitbit Sense 2 makes more sense if battery life and simpler health tracking matter more, as it lasts 6+ days and still offers ECG and built-in GPS.
Full comparison
The full record
78 specifications across 6 areas, with 40 genuine differences.
1. Design & display Apple Watch Series 11
Fact
Apple Watch Series 11
Fitbit Sense 2
Release date
2025-09-19
2022-09-29
Physical size
46 x 39 x 9.7 mm; 42 x 36 x 9.7 mm
40.5 x 40.5 x 11.2 mm
Weight
46 mm: 37.8 g (aluminum GPS), 36.9 g (aluminum GPS + Cellular), 43.1 g (titanium); 42 mm: 30.3 g, 29.7 g, 34.6 g respectively
37.64 g
Material
Aluminum or titanium case
Aluminum watch case and buckle; flexible sport-style band
Water resistance
5 ATM; IP6X; depth gauge to 6 m
5 ATM
Color options
Aluminum: Rose Gold, Silver, Space Gray, Jet Black; Titanium: Gold, Natural, Slate
Shadow Grey / Graphite Aluminum, Lunar White / Platinum Aluminum, Blue Mist / Soft Gold Aluminum
Display type
Always-On Retina LTPO3 wide-angle OLED
AMOLED
Display size
42 mm or 46 mm case
1.58 inch
Display resolution
42 mm: 374 x 446 pixels; 46 mm: 416 x 496 pixels
336 x 336 pixels
Display brightness
Up to 2,000 nits
Up to 1, 000 nits
Display protection
Ion-X front glass with 2x better scratch resistance than Series 10 (aluminum); sapphire front crystal (titanium)
Corning Gorilla Glass 3
2. Battery & charging Apple Watch Series 11
Fact
Apple Watch Series 11
Fitbit Sense 2
Battery
Rechargeable lithium-ion battery
Rechargeable lithium-polymer battery; 162 mAh
Battery life
Up to 24 hours; up to 38 hours in Low Power Mode
6+ days; up to 5 hours with continuous GPS
Charging
USB-C magnetic fast charging; up to 80% in about 30 minutes, 15 minute charge for 8 hours of use
USB. Charge time (0-100%): 2 hours. 12 minutes to get one day of battery life
3. Sensors & positioning Apple Watch Series 11
Fact
Apple Watch Series 11
Fitbit Sense 2
GNSS type
Built-in GNSS
Built-in GNSS + connected GPS
GPS
Yes
Yes
GALILEO
Yes
No
GLONASS
Yes
Yes
QZSS
Yes
No
Beidou
Yes
No
Accelerometer
Yes
Yes
Gyroscope
Yes
Yes
Barometric altimeter
Yes
Yes
Compass
Yes
No
Ambient light sensor
Yes
Yes
Optical heart rate
Yes
Yes
Electrical heart rate
Yes
Yes
SpO2
Yes
Yes
Temperature
Yes
Yes
Galvanic skin response
No
Yes
Microphone
Yes
Yes
Speakers
Yes
Yes
Vibration motor
Yes
Yes
4. Health & activity No clear edge
Fact
Apple Watch Series 11
Fitbit Sense 2
Steps
Yes
Yes
Distance
Yes
Yes
Calories burned
Yes
Yes
Floors
Yes
Yes
Sports tracking
Yes
40+ Goal-Based Exercise Modes
Sleep
Yes
Yes
Heart rate
Yes
Yes
HRV
Yes
Yes
Stress
No
Yes
Blood oxygen
Yes
Yes
Respiration rate
Yes
Yes
Skin temperature
Yes
Yes
ECG
Yes
Yes
Blood pressure
Hypertension notifications (no direct blood-pressure measurement)
No
Body composition
No
No
Glucose
No
No
Hydration level
No
No
UV exposure
No
No
Calorie intake
No
No
Readiness / recovery
No
Daily Readiness
Hyperglycemia risk assessment
No
No
Arterial stiffness detection
No
No
Pulse wave arrhythmia analysis
Yes
Yes
5. Smart features Apple Watch Series 11
Fact
Apple Watch Series 11
Fitbit Sense 2
Smartphone compatibility
iPhone 11 or later with iOS 26 or later
Android 11+; iOS 16.4+
Operating system at launch
watchOS 26
FitbitOS
Processor
Apple S10, 64-bit dual-core; 4-core Neural Engine
Ambiq Apollo4 Plus, ARM Cortex-M4 at 96-192 MHz
RAM
2 GB
2.75 MB on-chip SRAM
Bluetooth
Yes (5.3)
Yes
Wi-Fi
Yes (Wi-Fi 4 / 802.11n, 2.4/5 GHz)
Present but deactivated; cannot be turned on
NFC / connected pay
Yes (Apple Pay)
Yes
UWB
Yes (2nd-generation UWB)
No
Cellular
Optional (5G RedCap and LTE on supported regional models)
No
Smartphone notifications
Yes
Yes
Bluetooth calling
Yes (standalone on cellular models; via paired iPhone otherwise)
Yes
Smartphone music control
Yes
Yes (YouTube Music controls on paired phone; no offline playback)
On-board music storage
Yes
No
Voice assistant
Siri
Amazon Alexa
6. Navigation & safety Apple Watch Series 11
Fact
Apple Watch Series 11
Fitbit Sense 2
Maps
Yes
Google Maps directions
Offline maps
Yes
No
Navigation
Yes
Google Maps turn-by-turn directions
Emergency SOS
Yes
No
Satellite SOS
No
No
Fall detection
Yes
No
LED flashlight
No
No
Diving
No
No