Apple Watch Series 12 vs Oppo Watch S2 specs comparison
Apple Watch Series 12 wins for apps, health tracking and overall integration with the iPhone. Oppo Watch S2 is thinner, lasts around seven days in typical use and still packs dual-band GPS, ECG and temperature sensing, so it is the more practical choice if battery life matters more than smartwatch depth, although several health features remain China-specific.
Full comparison
The full record
83 specifications across 7 areas, with 36 genuine differences.
1. Design & display Mixed
Fact
Apple Watch Series 12
Oppo Watch S2
Release date
2026-09-18
2026-09-22
Physical size
Aluminum/titanium: 46 x 40 x 9.7 mm or 42 x 37 x 9.7 mm; ceramic: 47 x 41 x 9.85 mm or 43 x 37 x 9.85 mm
8.9 mm thick
Weight
46 mm: 39.5 g (aluminum GPS), 38.6 g (aluminum GPS + Cellular), 44.9 g (titanium), 51.3 g (Pearl White ceramic), 52.9 g (Night Blue ceramic); 42 mm: 32.2 g, 31.5 g, 36.5 g, 41.7 g and 42.8 g respectively
34.4 g without strap
Material
Aluminum, titanium or ceramic case, 60% tougher than Series 11
Stainless steel middle frame; PA + glass-fibre reinforced rear shell
Water resistance
5 ATM; IP6X; depth gauge to 6 m
5 ATM
Color options
Aluminum: Dark Bronze, Light Gold, Black, Space Gray; Titanium: Radiant Gold, Natural; Ceramic: Pearl White, Night Blue
Mountain Shadow Grey, Vibrant Orange, Misty Powder
Display type
Always-On Retina LTPO3 wide-angle OLED
AMOLED
Display size
42 mm or 46 mm case (ceramic cases are 43 mm or 47 mm tall)
1.46 inch
Display resolution
42 mm: 374 x 446 pixels; 46 mm: 416 x 496 pixels
464 x 464 pixels, 317 ppi
Display brightness
Up to 2,000 nits
600 nits typical; 1,500 nits outdoors; up to 3,000 nits in supported workout modes
Display protection
Ceramic Shield 2 on aluminum cases; sapphire front crystal on titanium and ceramic cases
Glass
2. Battery & charging Oppo Watch S2
Fact
Apple Watch Series 12
Oppo Watch S2
Battery
Rechargeable lithium-ion battery
Rechargeable battery; 339 mAh typical; 330 mAh rated
Battery life
Up to 24 hours; up to 38 hours in Low Power Mode
Up to 10 days in long-battery mode; up to 7 days with typical use; up to 4 days with AOD
Charging
USB-C magnetic fast charging
Integrated magnetic watch charging cable
Charging time
About 30 minutes to 80%; 15 minutes provides up to 12 hours; 5 minutes provides up to 10 hours of sleep tracking
90 minutes
3. Hardware & software No clear edge
Fact
Apple Watch Series 12
Oppo Watch S2
Product status
Current
Current
Battery life - smartwatch mode
Up to 24 hours; up to 38 hours in Low Power Mode
up to 7 days with typical use
4. Sensors & positioning Oppo Watch S2
Fact
Apple Watch Series 12
Oppo Watch S2
GNSS type
Built-in GNSS
Built-in dual-band L1+L5 GNSS
Multi-band GPS
No
Yes
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
Ambient light sensor
Yes
Yes
Optical heart rate
Yes (always-on optical heart sensor; high-frequency background tracking)
Yes (upgraded optical sensor; 75% better interference resistance claimed)
Electrical heart rate
Yes
Yes (China model)
SpO2
Yes
Yes
Temperature
Yes
Yes
Galvanic skin response
No
No
Microphone
Yes
Yes
Speakers
Yes
Yes
Vibration motor
Yes
Yes
5. Health & activity Mixed
Fact
Apple Watch Series 12
Oppo Watch S2
Steps
Yes
Yes
Distance
Yes
Yes
Calories burned
Yes
Yes (includes FatMax estimated fat burned in grams)
Floors
Yes
Yes
Sports tracking
Yes
Yes (100+ sports modes; FatMax on 16+ activities; 65+ strength exercises recognised)
Sleep
Yes
Yes (includes sleep apnoea risk assessment on China model)
Heart rate
Yes
Yes
HRV
Yes (Up to 24x more frequent than Series 11)
Yes (used in AI workout-readiness analysis)
Stress
No
Yes
Blood oxygen
Yes
Yes
Respiration rate
Yes
Yes
Skin temperature
Yes
Yes
ECG
Yes
Yes (China model)
Blood pressure
Hypertension notifications (no direct blood-pressure measurement)
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
No
6. Smart features Apple Watch Series 12
Fact
Apple Watch Series 12
Oppo Watch S2
Smartphone compatibility
iPhone 11 or later or iPhone SE (2nd generation or later) with iOS 27 or later
Android and iOS (China model; Android + Android and Android + iPhone dual-phone combinations supported)
Operating system at launch
watchOS 27
ColorOS Watch 17.0.0
Processor
Apple S11, 64-bit dual-core processor; 4-core Neural Engine; Audio Intelligence
BES2800BP
Storage
64 GB
4 GB eMMC
Subscription required
No
No
Bluetooth
Yes (5.3)
Yes
Wi-Fi
Yes (Wi-Fi 4 / 802.11n, 2.4/5 GHz)
No
NFC / connected pay
Yes (Apple Pay)
Yes (unencrypted access cards; regional support varies)
UWB
Yes (2nd-generation UWB)
No
Cellular
Optional (5G RedCap and LTE on supported regional models)
No
Smartphone notifications
Yes
Yes (supports dual-phone pairing)
Bluetooth calling
Yes (standalone on cellular models; via paired iPhone otherwise)
Yes
Smartphone music control
Yes
Yes
On-board music storage
Yes
Yes
Voice assistant
Siri AI powered by Apple Intelligence
Xiaobu Assistant (China)
7. Navigation & safety Apple Watch Series 12
Fact
Apple Watch Series 12
Oppo Watch S2
Maps
Yes
Yes
Offline maps
Yes
No
Navigation
Yes
Yes (phone-linked navigation information via Fluid Cloud)
Route navigation
Yes
Yes
Emergency SOS
Yes
No
Satellite SOS
No
No
Fall detection
Yes
Yes
LED flashlight
No
No
Diving
No
No