Oppo Watch S2 vs Watch X3 specs comparison

The Watch S2 makes more sense if you want a thin, lightweight fitness watch with week-long battery life. The Watch X3 is the more feature-heavy smartwatch, with a larger LTPO AMOLED display and broader smart functionality, but its normal smart-mode battery life is shorter.

Full comparison

The full record

79 specifications across 6 areas, with 32 genuine differences.

1. Design & display 11 differences · Oppo Watch X3 leads on Display size, Display resolution +1 Oppo Watch X3
Fact
Oppo Watch S2
Oppo Watch X3
Release date
2026-09-22
2026-03-17
Physical size
8.9 mm thick
47.4 x 47.4 x 11.0 mm
Weight
34.4 g without strap
43 g without strap
Material
Stainless steel middle frame; PA + glass-fibre reinforced rear shell
TC4 titanium alloy bezel and case; PA fibreglass bottom; 2D sapphire crystal
Water resistance
5 ATM
5 ATM; IP68; IP69
Color options
Mountain Shadow Grey, Vibrant Orange, Misty Powder
Black, Titanium
Display type
AMOLED
LTPO AMOLED
Display size
1.46 inch
1.50 inch
Display resolution
464 x 464 pixels, 317 ppi
466 x 466 pixels, 310 ppi
Display brightness
600 nits typical; 1,500 nits outdoors; up to 3,000 nits in supported workout modes
Up to 3,000 nits
Display protection
Glass
2D sapphire crystal
2. Battery & charging 4 differences · Oppo Watch S2 leads on Battery life Oppo Watch S2
Fact
Oppo Watch S2
Oppo Watch X3
Battery
Rechargeable battery; 339 mAh typical; 330 mAh rated
Rechargeable battery; 646 mAh typical; 632 mAh rated
Battery life
Up to 10 days in long-battery mode; up to 7 days with typical use; up to 4 days with AOD
Up to 5 days in standard smart mode; up to 3 days with heavy use; up to 16 days in power saver mode
Charging
Integrated magnetic watch charging cable
Watch VOOC magnetic charging
Charging time
90 minutes
75 minutes; 10 minutes provides up to 1 day
3. Sensors & positioning 1 difference · no clear overall edge No clear edge
Fact
Oppo Watch S2
Oppo Watch X3
GNSS type
Built-in dual-band L1+L5 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 (upgraded optical sensor; 75% better interference resistance claimed)
Yes
Electrical heart rate
Yes (China model)
Yes
SpO2
Yes
Yes
Temperature
Yes
Yes
Galvanic skin response
No
No
Microphone
Yes
Yes
Speakers
Yes
Yes
Vibration motor
Yes
Yes
4. Health & activity 2 differences · no clear overall edge No clear edge
Fact
Oppo Watch S2
Oppo Watch X3
Steps
Yes
Yes
Distance
Yes
Yes
Calories burned
Yes (includes FatMax estimated fat burned in grams)
Yes
Floors
Yes
Yes
Sports tracking
Yes (100+ sports modes; FatMax on 16+ activities; 65+ strength exercises recognised)
Yes
Sleep
Yes (includes sleep apnoea risk assessment on China model)
Yes
Heart rate
Yes
Yes
HRV
Yes (used in AI workout-readiness analysis)
Yes
Stress
Yes
Yes
Blood oxygen
Yes
Yes
Respiration rate
Yes
Yes
Skin temperature
Yes
Yes
ECG
Yes (China model)
Yes
Blood pressure
No
Blood-pressure tracking / hypertension risk assessment on China model; not cuff-based measurement
Body composition
No
No
Glucose
No
CGM integration on China model; no built-in glucose sensor
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
No
No
5. Smart features 10 differences · Oppo Watch X3 leads on Storage, Wi-Fi Oppo Watch X3
Fact
Oppo Watch S2
Oppo Watch X3
Smartphone compatibility
Android and iOS (China model; Android + Android and Android + iPhone dual-phone combinations supported)
Global model: Android 9.0+ with GMS; iOS not supported
Operating system at launch
ColorOS Watch 17.0.0
ColorOS Watch 8.0 + Wear OS 6.0 (global); ColorOS Watch 16 (China)
Processor
BES2800BP
Snapdragon W5 Gen 1 + BES2800BP
Storage
4 GB eMMC
32 GB
Bluetooth
Yes
Yes (5.2)
Wi-Fi
No
Yes (2.4/5 GHz)
NFC / connected pay
Yes (unencrypted access cards; regional support varies)
Yes
UWB
No
No
Cellular
No
Optional (eSIM, China model)
Smartphone notifications
Yes (supports dual-phone pairing)
Yes
Bluetooth calling
Yes
Yes
Smartphone music control
Yes
Yes
On-board music storage
Yes
Yes
Voice assistant
Xiaobu Assistant (China)
Google Assistant / Gemini (global); Xiaobu Assistant (China)
6. Navigation & safety 4 differences · Oppo Watch X3 leads on Offline maps, Emergency SOS Oppo Watch X3
Fact
Oppo Watch S2
Oppo Watch X3
Maps
Yes
Yes (Google Maps, global model)
Offline maps
No
Yes (Google Maps, global model)
Navigation
Yes (phone-linked navigation information via Fluid Cloud)
Yes
Emergency SOS
No
Yes
Satellite SOS
No
No
Fall detection
Yes
Yes
LED flashlight
No
No
Diving
No
No

Individual specifications

These technical specs are correct to the best of our knowledge at the time of publishing.