vs
7.2Display6.8
5.0Health tracking8.6
8.0Sports & outdoor6.4
9.0Smart features7.9
8.3Build & durability6.0
Dimensions
Size comparison
Watch Series 7 AluminumWatch Series 8
| Watch Series 7 Aluminum | Watch Series 8 | Difference | |
|---|---|---|---|
| Height | 45 mm | 45 mm | = |
| Width | 38 mm | 38 mm | = |
| Thickness | 10.7 mm | 10.7 mm | = |
| Weight | 32 g | 42 g | −10 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Watch Series 7 Aluminum better than Watch Series 8?
- Weight32 g vs 42.3 g+32%
Why is Watch Series 8 better than Watch Series 7 Aluminum?
Watch Series 8 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 45 mm | 45 mm |
| Weight | 32 g | 42.3 g |
| Thickness | 10.7 mm | 10.7 mm |
| Height | 45 mm | 45 mm |
| Width | 38 mm | 38 mm |
| Case material | Aluminium | Stainless steel |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Ion-X strengthened glass | Sapphire crystal glass |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | IP6X | IP6X |
| Water rating (maker) | — | 50 m |
| Colours | Starlight, Midnight, Blue, Green, Red | Graphite, Silver, Gold |
| Display | ||
| Screen size | 1.9″ | 1.9″ |
| Display technology | OLED | OLED |
| Panel | Retina LTPO OLED | Retina LTPO OLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Resolution (width) | 396 px | 396 px |
| Resolution (height) | 484 px | 484 px |
| Pixel density | 326 ppi | 326 ppi |
| Peak brightness | 1,000 nits | 1,000 nits |
| LTPO display | Yes | Yes |
| Refresh rate | 60 Hz | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | — | 0.8 days |
| Battery life (hours) | — | 18 h |
| Battery capacity | 309 mAh | 308 mAh |
| Battery type | Li-Ion | Li-Ion |
| Wireless charging | Yes | Yes |
| Charged in 30 min | 53% | 53% |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Skin temperature | — | Yes |
| Temperature sensor | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max | Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body) |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| LTE (cellular) | Yes | Yes |
| eSIM | Yes | Yes |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 5.3 |
| Ultra Wideband | Yes | Yes |
| Smart features | ||
| Calls from the wrist | — | Yes |
| Speaker | Yes | Yes |
| Microphone | — | Yes |
| Voice assistant | — | Yes |
| Music on the watch | — | Yes |
| Storage | 32 GB | 32 GB |
| RAM | 1 GB | 1 GB |
| Platform | ||
| Operating system | watchOS 8.0 | watchOS 9.0 |
| Platform | watchOS | watchOS |
| Works with | — | iOS |
| Chipset | Apple S7 | Apple S8 |
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