vs
7.2Display8.1
9.2Health tracking5.0
8.0Sports & outdoor4.7
9.0Smart features9.6
8.3Build & durability5.5
Dimensions
Size comparison
Watch Series 8 AluminumWatch S4 Sport
| Watch Series 8 Aluminum | Watch S4 Sport | Difference | |
|---|---|---|---|
| Height | 45 mm | 46.9 mm | −1.9 mm |
| Width | 38 mm | 46.9 mm | −8.9 mm |
| Thickness | 10.7 mm | 12.6 mm | −1.9 mm |
| Weight | 32 g | 49 g | −17 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch Series 8 Aluminum better than Watch S4 Sport?
- Weight32 g vs 49 g+53%
- Screen size1.9″ vs 1.43″+33%
- Thickness10.7 mm vs 12.6 mm+18%
Why is Watch S4 Sport better than Watch Series 8 Aluminum?
- Peak brightness1,000 nits vs 2,200 nits2.2×
- Battery capacity308 mAh vs 586 mAh+90%
- Resolution (width)396 px vs 466 px+18%
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 47 mm |
| Weight | 32 g | 49 g |
| Thickness | 10.7 mm | 12.6 mm |
| Height | 45 mm | 46.9 mm |
| Width | 38 mm | 46.9 mm |
| Case material | Aluminium | — |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Ion-X strengthened glass | Sapphire crystal glass |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | IP6X | — |
| Colours | Midnight, Starlight, Silver, Red | Titanium |
| Display | ||
| Screen size | 1.9″ | 1.43″ |
| Display technology | OLED | AMOLED |
| Panel | Retina LTPO OLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Resolution (width) | 396 px | 466 px |
| Resolution (height) | 484 px | 466 px |
| Pixel density | 326 ppi | 326 ppi |
| Peak brightness | 1,000 nits | 2,200 nits |
| LTPO display | Yes | — |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery capacity | 308 mAh | 586 mAh |
| Battery type | Li-Ion | Li-Po |
| 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, compass, barometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | — | 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 | 5.2 |
| Ultra Wideband | Yes | — |
| Smart features | ||
| Speaker | Yes | Yes |
| Storage | 32 GB | 32 GB |
| RAM | 1 GB | — |
| Platform | ||
| Operating system | watchOS 9.0 | HyperOS |
| Platform | watchOS | Proprietary |
| Chipset | Apple S8 | — |
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