Samsung Galaxy Watch 9 vs Galaxy Watch Ultra 2
Galaxy Watch 9 is the better everyday choice for most people, with a lighter design, two case sizes and most of Samsung’s health features. Galaxy Watch Ultra 2 makes more sense if you want much longer battery life, tougher hardware and something better suited to outdoor use.
At a glance
What's different?
The strongest database-backed differences, without pretending every different number is an advantage.
Samsung Galaxy Watch 9
- 45% lighter 34.0 g vs 61.5 g
Samsung Galaxy Watch Ultra 2
- Much longer battery life 80 hours vs 40 hours
- 67% brighter display Up to 5,000 nits vs Up to 3,000 nits
- Titanium case elements Titanium case; sapphire crystal vs Armor Aluminum case; sapphire crystal
- 2% larger display 1.5 in vs 1.47 in
- 7.6% more display pixels 498 × 498 vs 480 × 480
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 12 genuine differences.
1. Design & display Samsung Galaxy Watch Ultra 2
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch Ultra 2
Release date
2026-07
2026-07
Physical size
44 mm: 46.0 x 43.7 x 8.6 mm; 40 mm: 42.7 x 40.4 x 8.6 mm
47.4 x 47.1 x 10.7 mm
Weight
44 mm: 34.0 g; 40 mm: 31.5 g
61.5 g
Material
Armor Aluminum case; sapphire crystal
Titanium case; sapphire crystal
Water resistance
5 ATM; IP68; MIL-STD-810H
10 ATM; IP69K; MIL-STD-810H; EN13319
Color options
Graphite, Silver, Cream
Titanium Gray, Titanium 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)
1.5 inch (38.5 mm)
Display resolution
44 mm: 480 x 480 pixels; 40 mm: 438 x 438 pixels
498 x 498 pixels
Display brightness
Up to 3,000 nits
Up to 5,000 nits
Display protection
Sapphire crystal
Sapphire crystal
2. Battery & charging Samsung Galaxy Watch Ultra 2
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch Ultra 2
Battery
Rechargeable battery; 44 mm: 445 mAh; 40 mm: 390 mAh
Rechargeable battery; 800 mAh
Battery life
Up to 40 hours with AOD off; up to 30 hours with AOD on
Up to 80 hours with AOD off; up to 60 hours with AOD on
Charging
Fast wireless charging
Fast wireless charging
3. Sensors & positioning Even
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch Ultra 2
GNSS type
Built-in dual-band GNSS
Built-in dual-band 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
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
No significant differences in this area.
4. Health & activity Even
Fact
Samsung Galaxy Watch 9
Samsung Galaxy Watch Ultra 2
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 Ultra 2
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 7 Powered by Samsung; One UI 9 Watch
Processor
Qualcomm Snapdragon Wear Elite / SDW6100 (3 nm, penta-core)
Qualcomm Snapdragon Wear Elite / SDW6100 (3 nm, penta-core)
RAM
2 GB
2 GB
Storage
32 GB
64 GB
Bluetooth
Yes (6.0)
Yes (6.0)
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
Yes (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 Ultra 2
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.