vs
8.8Display9.0
9.2Health tracking5.0
8.0Sports & outdoor8.0
9.0Smart features9.6
8.4Build & durability8.2
Dimensions
Size comparison
Watch Series 9 AluminumWatch 3
| Watch Series 9 Aluminum | Watch 3 | Difference | |
|---|---|---|---|
| Height | 45 mm | 43 mm | +2 mm |
| Width | 38 mm | 37 mm | +1 mm |
| Thickness | 10.7 mm | 11.7 mm | −1 mm |
| Weight | 32 g | 32 g | = |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch Series 9 Aluminum better than Watch 3?
- Storage64 GB vs 32 GB2×
- Screen size1.9″ vs 1.75″+9%
- Thickness10.7 mm vs 11.7 mm+9%
- Resolution (width)396 px vs 372 px+6%
Why is Watch 3 better than Watch Series 9 Aluminum?
- Battery capacity308 mAh vs 400 mAh+30%
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 43 mm |
| Weight | 31.9 g | 31.9 g |
| Thickness | 10.7 mm | 11.7 mm |
| Height | 45 mm | 43 mm |
| Width | 38 mm | 37 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, Gold |
| Display | ||
| Screen size | 1.9″ | 1.75″ |
| Display technology | OLED | AMOLED |
| Panel | Retina LTPO OLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 396 px | 372 px |
| Resolution (height) | 484 px | 430 px |
| Pixel density | 326 ppi | 326 ppi |
| Peak brightness | 2,000 nits | — |
| LTPO display | Yes | — |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 308 mAh | 400 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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