Samsung Galaxy Watch 9 vs Galaxy Watch 8 specs comparison
The Galaxy Watch 9 is the better buy if prices are close, thanks to newer hardware and a few useful refinements. But Watch 8 owners have little reason to upgrade, as the overall experience remains very similar.
At a glance
What's different?
The strongest database-backed differences, without pretending every different number is an advantage.
Samsung Galaxy Watch 9
- Processor Qualcomm Snapdragon Wear Elite / SDW6100 (3 nm, penta-core)
Samsung Galaxy Watch 8
- Processor Exynos W1000 (3 nm, penta-core)
Both include ECG, blood oxygen tracking, skin temperature tracking, HRV tracking, on-board music, Bluetooth calling, a microphone.
Full comparison
The full record
78 specifications across 6 areas, with 8 genuine differences.
1. Design & display No clear edge
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch 8
Release date
2026-07
2025-07
Physical size
44 mm: 46.0 x 43.7 x 8.6 mm; 40 mm: 42.7 x 40.4 x 8.6 mm
44 mm: 46.0 x 43.7 x 8.6 mm; 40 mm: 42.7 x 40.4 x 8.6 mm
Weight
44 mm: 34.0 g; 40 mm: 31.5 g
44 mm: 34.0 g; 40 mm: 30.0 g
Material
Armor Aluminum case; sapphire crystal
Armor Aluminum case; sapphire crystal
Water resistance
5 ATM; IP68; MIL-STD-810H
5 ATM; IP68; MIL-STD-810H
Color options
Graphite, Silver, Cream
Graphite, Silver
Display type
Super AMOLED, full-colour Always On Display
Super AMOLED, full-colour Always On Display
Display size
44 mm: 1.47 inch (37.3 mm); 40 mm: 1.34 inch (34 mm)
44 mm: 1.47 inch (37.3 mm); 40 mm: 1.34 inch (34 mm)
Display resolution
44 mm: 480 x 480 pixels; 40 mm: 438 x 438 pixels
44 mm: 480 x 480 pixels; 40 mm: 438 x 438 pixels
Display brightness
Up to 3,000 nits
Up to 3,000 nits
Display protection
Sapphire crystal
Sapphire crystal
2. Battery & charging No clear edge
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch 8
Battery
Rechargeable battery; 44 mm: 445 mAh; 40 mm: 390 mAh
Rechargeable battery; 44 mm: 435 mAh; 40 mm: 325 mAh
Battery life
Up to 40 hours with AOD off; up to 30 hours with AOD on
Up to 40 hours with AOD off; up to 30 hours with AOD on
Charging
Fast wireless charging
Fast wireless charging
3. Sensors & positioning No clear edge
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch 8
GNSS type
Built-in dual-band GNSS
Built-in dual-band GNSS
GPS
Yes
Yes
GALILEO
Yes
Yes
GLONASS
Yes
Yes
QZSS
Yes
No
Beidou
Yes
Yes
Accelerometer
Yes
Yes
Gyroscope
Yes
Yes
Barometric altimeter
Yes
Yes
Compass
Yes
Yes
Geomagnetic
Yes
Yes
Ambient light sensor
Yes
Yes
Optical heart rate
Yes
Yes
Electrical heart rate
Yes
Yes
SpO2
Yes
Yes
Temperature
Yes
Yes
Galvanic skin response
Yes
Yes
Microphone
Yes
Yes
Speakers
Yes
Yes
Vibration motor
Yes
Yes
4. Health & activity Even
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch 8
Steps
Yes
Yes
Distance
Yes
Yes
Calories burned
Yes
Yes
Floors
Yes
Yes
Sports tracking
Yes
Yes
Sleep
Yes
Yes
Heart rate
Yes
Yes
HRV
Yes
Yes
Stress
Yes
Yes
Blood oxygen
Yes
Yes
Respiration rate
Yes
Yes
Skin temperature
Yes
Yes
ECG
Yes
Yes
Blood pressure
Yes (Samsung Health Monitor; availability varies by market, calibration required)
Yes (Samsung Health Monitor; availability varies by market, calibration required)
Body composition
Yes
Yes
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
No significant differences in this area.
5. Smart features No clear edge
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch 8
Smartphone compatibility
Android with Google Mobile Services
Android with Google Mobile Services
Operating system at launch
Wear OS 7 Powered by Samsung; One UI 9 Watch
Wear OS 6 Powered by Samsung; One UI 8 Watch
Processor
Qualcomm Snapdragon Wear Elite / SDW6100 (3 nm, penta-core)
Exynos W1000 (3 nm, penta-core)
RAM
2 GB
2 GB
Storage
32 GB
32 GB
Bluetooth
Yes (6.0)
Yes (5.3)
Wi-Fi
Yes (802.11 a/b/g/n, 2.4/5 GHz)
Yes (802.11 a/b/g/n, 2.4/5 GHz)
NFC / connected pay
Yes
Yes
UWB
No
No
Cellular
Optional LTE/eSIM
Optional LTE/eSIM
Smartphone notifications
Yes
Yes
Bluetooth calling
Yes
Yes
Smartphone music control
Yes
Yes
On-board music storage
Yes
Yes
Voice assistant
Google Gemini / Bixby
Google Gemini / Bixby
6. Navigation & safety Even
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch 8
Maps
Yes (Google Maps)
Yes (Google Maps)
Offline maps
Yes (Google Maps)
Yes (Google Maps)
Navigation
Yes (turn-by-turn navigation)
Yes (turn-by-turn navigation)
Emergency SOS
Yes
Yes
Satellite SOS
No
No
Fall detection
Yes
Yes
LED flashlight
No
No
No significant differences in this area.