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Compare features, prices and ratings to find the perfect phone for you.
Our Verdict
Analysis
Samsung Galaxy S25 Ultra has the bigger display.
Overall Winner
Samsung Galaxy S25 Ultra
Display Winner
Samsung Galaxy S25 Ultra
Performance Winner
Tie
Camera Winner
Tie
Battery Winner
Tie
Value Winner
Tie
Specifications Comparison
| Feature | Oppo Watch 2 | Samsung Galaxy S25 Ultra |
|---|---|---|
| Display size (in) | 1.91 | 6.90 |
| Weight (g) | 35 | 218 |
| Thickness (mm) | 11.60 | 8.20 |
| Chipset | Qualcomm Snapdragon Wear 4100 (12 nm) | Snapdragon 8 Elite |
| OS | Android Wear OS - InternationalColorOS Watch 2.0 - China | Android 15 |
Pros & Cons
Oppo Watch 2
Samsung Galaxy S25 Ultra
- Brilliant display
- Versatile camera system
- Long update commitment
- Productivity features
- Premium pricing
- Bulky design
- Slow charging vs Chinese rivals
Every Spec, Side by Side
Specification
Oppo
Oppo Watch 2
Samsung
Samsung Galaxy S25 Ultra
Battery 3 specs
Type
Li-Ion 510 mAh
Li-Ion 5000 mAh
Capacity
—
5000 mAh
Charging
—
45W wired
Body 5 specs
Dimensions
46.4 x 38.5 x 11.6 mm (1.83 x 1.52 x 0.46 in)
162.8 x 77.6 x 8.2 mm
Weight
35 g (46mm) / 31 g (42mm) (1.09 oz)
218 g
Build
Glass front, aluminum frame
Glass front (Corning Gorilla Armor 2), glass back (Gorilla Glass Victus 2), titanium frame (grade 5)
SIM
eSIM (market/region dependent)
· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) - INT· Nano-SIM + eSIM + eSIM (max 2 at a time) - USA· Nano-SIM + Nano-SIM - CN
5ATM water resistant
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Stylus
Camera 1 spec
No
—
Connectivity 7 specs
WLAN
Wi-Fi 802.11 b/g/n
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE
5.4, A2DP, LE
Positioning
GPS, GLONASS, GALILEO, BDS
GPS, GLONASS, BDS, GALILEO, QZSS
NFC
Yes
Yes
Radio
No
No
USB
No
USB Type-C 3.2, DisplayPort 1.2, OTG
5G
—
Yes
Display 5 specs
Type
AMOLED
Dynamic AMOLED 2X
Size
1.91 inches
6.9 inches
Resolution
402 x 476 pixels (~326 ppi density)
1440 x 3120 pixels
Protection
—
Corning Gorilla Armor 2, Mohs level 6
—
DX anti-reflective coating
Features 2 specs
Sensors
Accelerometer, gyro, heart rate, compass, barometer, SpO2
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
—
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Ultra Wideband (UWB) support
Launch 2 specs
Announced
2021, July 27
2025, January 22
Status
Available. Released 2021, July 27
Available. Released 2025, February 03
Memory 5 specs
Card slot
No
No
Internal
8GB 1GB RAM
256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM, 1TB 16GB RAM
eMMC 4.5
UFS 4.0
RAM
—
12GB
Storage
—
256GB
Misc 5 specs
Colors
Star Blue, Platinum Black, Rose Gold
Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold
Models
OW20W2
SM-S938B, SM-S938B/DS, SM-S938U, SM-S938U1, SM-S938W, SM-S938N, SM-S9380, SM-S938E, SM-S938E/DS
Price
About 170 EUR
$ 806.08 / C$ 1,149.00 / £ 689.99 / € 840.00 / ₹ 99,990
SAR
—
1.26 W/kg (head) 0.64 W/kg (body)
SAR EU
—
1.25 W/kg (head) 1.42 W/kg (body)
Network 7 specs
Technology
HSPA / LTE
GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands
N/A
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 2100
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
1, 3, 5, 8, 34, 38, 39, 40, 41 - China
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International
Speed
HSPA, LTE
HSPA, LTE (CA), 5G
—
1, 2, 5, 7, 25, 28, 41, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6/mmWave - USA unlocked
5G bands
—
1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
Platform 4 specs
OS
Android Wear OS - InternationalColorOS Watch 2.0 - China
Android 15
Chipset
Qualcomm Snapdragon Wear 4100 (12 nm)
Snapdragon 8 Elite
CPU
Quad-core 1.7 GHz Cortex-A53
Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPU
Adreno 504
Adreno 830 (1200 MHz)
Sound 3 specs
Loudspeaker
Yes
Yes, with stereo speakers
3.5mm jack
No
No
—
High-bitrate audio support
Eu Label 4 specs
Energy
—
Class B
Battery
—
44:54h endurance, 2000 cycles
Free fall
—
Class A (270 falls)
Repairability
—
Class C
Main Camera 3 specs
Features
—
Laser AF, Best Face, LED flash, auto-HDR, panorama
Video
—
8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Quad
—
200 MP + 50 MP + 50 MP + 10 MP
Our Tests 4 specs
Performance
—
AnTuTu: 2207809 (v10)
GeekBench: 9846 (v6)
3DMark: 6687 (Wild Life Extreme)
Display
—
1417 nits max brightness (measured)
Loudspeaker
—
-24.6 LUFS (Very good)
Battery
—
Active use score 14:49h
Selfie Camera 3 specs
Features
—
HDR, HDR10+
Video
—
4K@30/60fps, 1080p@30fps
Single
—
12 MP
Similar Comparisons
Common Questions
Which phone is the best in this comparison?
Samsung Galaxy S25 Ultra has the bigger display.
How are the comparison winners decided?
We compare measurable specs (display size, battery capacity, RAM, charging, weight) and price (USD). When two phones tie or data is missing we mark the category "Depends".
Which is more affordable?
The cheaper option is shown as the value winner above. Prices are USD and may vary by region or retailer.