Dimensions
Size comparison
GTS 4Sense 2
| GTS 4 | Sense 2 | Difference | |
|---|---|---|---|
| Height | 36.5 mm | 40.5 mm | −4 mm |
| Width | 42.7 mm | 40.5 mm | +2.2 mm |
| Thickness | 9.9 mm | 12.3 mm | −2.4 mm |
| Weight | 27 g | 38 g | −11 g |
Drawn to the same scale from the official dimensions (front and side).
Why is GTS 4 better than Sense 2?
- Battery life (smartwatch mode)8 days vs 6 days+33%
- Weight27 g vs 37.6 g+39%
- Battery capacity300 mAh vs 162 mAh+85%
- Thickness9.9 mm vs 12.3 mm+24%
Why is Sense 2 better than GTS 4?
Sense 2 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | — | 40 mm |
| Weight | 27 g | 37.6 g |
| Thickness | 9.9 mm | 12.3 mm |
| Height | 36.5 mm | 40.5 mm |
| Width | 42.7 mm | 40.5 mm |
| Case material | Aluminium | Aluminium |
| Lens / cover glass | Tempered glass | — |
| Strap material | — | Silikon |
| Water resistance | 5 ATM | 5 ATM |
| Water rating (maker) | — | 50 m / 5 ATM |
| Display | ||
| Screen size | 1.75″ | — |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 390 px | — |
| Resolution (height) | 450 px | — |
| Pixel density | 341 ppi | — |
| Battery | ||
| Battery life (smartwatch mode) | 8 days | 6 days |
| GPS battery life | 28 h | — |
| GPS battery life (dual-band) | 16 h | — |
| Battery capacity | 300 mAh | 162 mAh |
| Charging | Magnetic charging | — |
| Health sensors | ||
| Optical heart rate | — | Yes |
| Blood oxygen (SpO2) | — | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | accelerometer, ambient light |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GPS, GLONASS |
| Sport profiles | 150 | — |
| Connectivity | ||
| NFC payments | — | Yes |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5 | 5 |
| Smart features | ||
| Calls from the wrist | — | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | — | Yes |
| Platform | ||
| Operating system | Zepp OS | — |
| Platform | Proprietary | — |
| Works with | iOS, Android | iOS |
