Fitbit Edge vs Apple Watch SE 3 specs comparison
The Apple Watch SE 3 is the more versatile device, with downloadable apps, calling, messaging, advanced workout features and deeper iPhone integration. Fitbit Edge is simpler and considerably better suited to people who want continuous health and fitness tracking without charging every day. Its seven-day battery life is a major advantage over Apple's 18-hour rating, while ECG functionality is another point in Fitbit's favour. The SE 3 makes more sense as an everyday smartwatch, provided you use an iPhone.
Full comparison
The full record
75 specifications across 6 areas, with 39 genuine differences.
1. Design & display No clear edge
Fact
Fitbit Edge
Apple Watch SE 3
Release date
2026-10
2025-09-19
Physical size
11.58 x 39.22 x 25.56 mm
44 x 38 x 10.7 mm; 40 x 34 x 10.7 mm
Weight
17.7 g
44 mm: 32.9 g (GPS), 33.0 g (GPS + Cellular); 40 mm: 26.3 g (GPS), 26.4 g (GPS + Cellular)
Material
Aluminum housing and silicone sports strap with clasp
Aluminum case
Water resistance
5 ATM; IP68
5 ATM; ISO 22810:2010
Color options
Obsidian, Olive, Canyon, Fog
Starlight, Midnight
Display type
AMOLED touchscreen
Always-On Retina LTPO OLED
Display size
1.34 inches
40 mm or 44 mm case
Display protection
Corning Gorilla Glass 3
Tough Ion-X front glass; 4x more crack resistant than Apple Watch SE 2
2. Battery & charging Fitbit Edge
Fact
Fitbit Edge
Apple Watch SE 3
Battery
65mAh user-replaceable, rechargeable lithium-polymer battery
Rechargeable lithium-ion battery
Battery life
Up to 7 days, up to 2 days with always-on mode
Up to 18 hours; up to 32 hours in Low Power Mode
Charging
USB charging cable
USB-C magnetic fast charging; up to 80% in about 45 minutes
3. Sensors & positioning Mixed
Fact
Fitbit Edge
Apple Watch SE 3
GNSS type
Built-in GNSS + connected GPS
Built-in GNSS
GPS
Yes
Yes
GALILEO
Yes
Yes
GLONASS
Yes
Yes
QZSS
Yes
Yes
Beidou
Yes
Yes
Accelerometer
Yes
Yes
Gyroscope
Yes
Yes
Barometric altimeter
Yes
Yes
Compass
No
Yes
Ambient light sensor
Yes
Yes
Optical heart rate
Yes
Yes
Electrical heart rate
Yes
No
SpO2
Yes
No
Temperature
Yes
Yes
Galvanic skin response
No
No
Microphone
No
Yes
Speakers
No
Yes
Vibration motor
Yes
Yes
4. Health & activity Fitbit Edge
Fact
Fitbit Edge
Apple Watch SE 3
Steps
Yes
Yes
Distance
Yes
Yes
Calories burned
Yes
Yes
Floors
Yes
Yes
Sports tracking
Yes
Yes
Sleep
Yes
Yes
Heart rate
Yes (High/low heart rate notifications and ECG app)
Yes
HRV
Yes
Yes
Stress
Yes
No
Blood oxygen
Yes
No
Respiration rate
Yes
Yes
Skin temperature
Yes
Yes
ECG
Yes
No
Blood pressure
Trends in blood pressure
No
Body composition
No
No
Glucose
No
No
Hydration level
No
No
UV exposure
No
No
Calorie intake
No
No
Hyperglycemia risk assessment
No
No
Arterial stiffness detection
No
No
Pulse wave arrhythmia analysis
Yes
Yes
5. Smart features Apple Watch SE 3
Fact
Fitbit Edge
Apple Watch SE 3
Smartphone compatibility
Android 11+; iOS 16.4+
iPhone 11 or later with iOS 26 or later
Operating system at launch
FitbitOS
watchOS
Processor
Ambiq AP5 MCU
Apple S10, 64-bit dual-core; 4-core Neural Engine
Storage
64MB NOR flash memory
64 GB
Bluetooth
Yes (5.4)
Yes (5.3)
Wi-Fi
No
Yes (Wi-Fi 4 / 802.11n, 2.4 GHz)
NFC / connected pay
No
Yes (Apple Pay)
UWB
No
No
Cellular
No
Optional (5G RedCap and LTE on supported regional models)
Smartphone notifications
Yes
Yes
Bluetooth calling
No
Yes (standalone on cellular models; via paired iPhone otherwise)
Smartphone music control
Yes (YouTube Music controls on paired phone; no offline playback)
Yes
On-board music storage
No
Yes
Voice assistant
No
Siri
6. Navigation & safety Apple Watch SE 3
Fact
Fitbit Edge
Apple Watch SE 3
Maps
Google Maps directions
Yes (Apple Maps)
Offline maps
No
Yes (synced from iPhone)
Navigation
Google Maps turn-by-turn directions
Yes (Apple Maps turn-by-turn)
Emergency SOS
No
Yes
Satellite SOS
No
No
Fall detection
No
Yes
LED flashlight
No
No
Diving
No
No