vs
9.2Display7.2
9.5Sports & outdoor8.0
9.0Build & durability8.3
Dimensions
Size comparison
GTS 4Watch Series 8 Aluminum
| GTS 4 | Watch Series 8 Aluminum | Difference | |
|---|---|---|---|
| Height | 36.5 mm | 45 mm | −8.5 mm |
| Width | 42.7 mm | 38 mm | +4.7 mm |
| Thickness | 9.9 mm | 10.7 mm | −0.8 mm |
| Weight | 27 g | 32 g | −5 g |
Drawn to the same scale from the official dimensions (front and side).
Why is GTS 4 better than Watch Series 8 Aluminum?
- Weight27 g vs 32 g+19%
- Thickness9.9 mm vs 10.7 mm+8%
- Pixel density341 ppi vs 326 ppi+5%
Why is Watch Series 8 Aluminum better than GTS 4?
- Screen size1.75″ vs 1.9″+9%
- Battery capacity300 mAh vs 308 mAh+3%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 45 mm |
| Weight | 27 g | 32 g |
| Thickness | 9.9 mm | 10.7 mm |
| Height | 36.5 mm | 45 mm |
| Width | 42.7 mm | 38 mm |
| Case material | Aluminium | Aluminium |
| Sapphire crystal | — | Yes |
| Lens / cover glass | Tempered glass | Ion-X strengthened glass |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | — | IP6X |
| Colours | — | Midnight, Starlight, Silver, Red |
| Display | ||
| Screen size | 1.75″ | 1.9″ |
| Display technology | AMOLED | OLED |
| Panel | AMOLED | Retina LTPO OLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 390 px | 396 px |
| Resolution (height) | 450 px | 484 px |
| Pixel density | 341 ppi | 326 ppi |
| Peak brightness | — | 1,000 nits |
| LTPO display | — | Yes |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 8 days | — |
| GPS battery life | 28 h | — |
| GPS battery life (dual-band) | 16 h | — |
| Battery capacity | 300 mAh | 308 mAh |
| Battery type | — | Li-Ion |
| Wireless charging | — | Yes |
| Charging | Magnetic charging | — |
| Charged in 30 min | — | 53% |
| Health sensors | ||
| Optical heart rate | — | Yes |
| Blood oxygen (SpO2) | — | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Temperature sensor | — | Yes |
| Sleep tracking | Yes | — |
| Sensors | — | Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body) |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Barometric altimeter | — | Yes |
| Compass | — | Yes |
| Sport profiles | 150 | — |
| Connectivity | ||
| NFC payments | — | Yes |
| LTE (cellular) | — | Yes |
| eSIM | — | Yes |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 5.3 |
| Ultra Wideband | — | Yes |
| Smart features | ||
| Speaker | Yes | Yes |
| Microphone | Yes | — |
| Storage | — | 32 GB |
| RAM | — | 1 GB |
| Platform | ||
| Operating system | Zepp OS | watchOS 9.0 |
| Platform | Proprietary | watchOS |
| Works with | iOS, Android | — |
| Chipset | — | Apple S8 |
