vs
8.8Display9.4
9.2Health tracking5.0
8.0Sports & outdoor8.0
9.0Smart features9.6
8.4Build & durability6.0
Dimensions
Size comparison
Watch Series 9 AluminumWatch 3 Pro
| Watch Series 9 Aluminum | Watch 3 Pro | Difference | |
|---|---|---|---|
| Height | 45 mm | 50.4 mm | −5.4 mm |
| Width | 38 mm | 38.5 mm | −0.5 mm |
| Thickness | 10.7 mm | 12.8 mm | −2.1 mm |
| Weight | 32 g | 38 g | −6 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch Series 9 Aluminum better than Watch 3 Pro?
- Storage64 GB vs 32 GB2×
- Weight31.9 g vs 37.5 g+18%
- Thickness10.7 mm vs 12.8 mm+20%
- Resolution (width)396 px vs 378 px+5%
Why is Watch 3 Pro better than Watch Series 9 Aluminum?
- Battery capacity308 mAh vs 550 mAh+79%
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 50 mm |
| Weight | 31.9 g | 37.5 g |
| Thickness | 10.7 mm | 12.8 mm |
| Height | 45 mm | 50.4 mm |
| Width | 38 mm | 38.5 mm |
| Case material | Aluminium | Aluminium |
| Sapphire crystal | Yes | — |
| Lens / cover glass | Ion-X strengthened glass | — |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | IP6X | — |
| Colours | Midnight, Starlight, Silver, Pink, Red | Black, Silver |
| Display | ||
| Screen size | 1.9″ | 1.91″ |
| Display technology | OLED | AMOLED |
| Panel | Retina LTPO OLED | LTPO AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 396 px | 378 px |
| Resolution (height) | 484 px | 496 px |
| Pixel density | 326 ppi | 327 ppi |
| Peak brightness | 2,000 nits | — |
| LTPO display | Yes | Yes |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 308 mAh | 550 mAh |
| Battery type | Li-Ion | Li-Ion |
| Wireless charging | Yes | — |
| Charged in 30 min | 53% | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | — |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | — |
| Sensors | Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body) | Accelerometer, gyro, heart rate, compass, barometer, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | Yes | Yes |
| eSIM | Yes | Yes |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5.3 | 5 |
| Ultra Wideband | Yes | — |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | 64 GB | 32 GB |
| RAM | — | 1 GB |
| Platform | ||
| Operating system | watchOS 10 | Android Wear OS - International ColorOS Watch 3.0 - China |
| Platform | watchOS | Android |
| Chipset | Apple S9 | Qualcomm Snapdragon W5+ Gen 1 |
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