vs
9.2Display9.2
6.3Battery life7.4
9.6Sports & outdoor9.5
8.6Build & durability9.0
Dimensions
Size comparison
Active 2 (Square)GTS 4
| Active 2 (Square) | GTS 4 | Difference | |
|---|---|---|---|
| Height | 36.9 mm | 36.5 mm | +0.4 mm |
| Width | 43.3 mm | 42.7 mm | +0.6 mm |
| Thickness | 9 mm | 9.9 mm | −0.9 mm |
| Weight | 31 g | 27 g | +4 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Active 2 (Square) better than GTS 4?
- Battery life (smartwatch mode)10 days vs 8 days+25%
- Thickness9 mm vs 9.9 mm+10%
- Sport profiles160 vs 150+7%
Why is GTS 4 better than Active 2 (Square)?
- GPS battery life21 h vs 28 h+33%
- Weight31.4 g vs 27 g+16%
- Battery capacity260 mAh vs 300 mAh+15%
Specifications
Side by side
| Design & durability | ||
| Case size | 43 mm | — |
| Weight | 31.4 g | 27 g |
| Thickness | 9 mm | 9.9 mm |
| Height | 36.9 mm | 36.5 mm |
| Width | 43.3 mm | 42.7 mm |
| Case material | Stainless steel | Aluminium |
| Sapphire crystal | Yes | — |
| Lens / cover glass | Sapphire glass | Tempered glass |
| Water resistance | 5 ATM | 5 ATM |
| Display | ||
| Screen size | 1.75″ | 1.75″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 390 px | 390 px |
| Resolution (height) | 450 px | 450 px |
| Pixel density | 341 ppi | 341 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 10 days | 8 days |
| Battery saver mode | 19 days | — |
| GPS battery life | 21 h | 28 h |
| GPS battery life (dual-band) | — | 16 h |
| Battery capacity | 260 mAh | 300 mAh |
| Charging | Magnetic charging base | Magnetic charging |
| Health sensors | ||
| Optical heart rate | Yes | — |
| Blood oxygen (SpO2) | Yes | — |
| Temperature sensor | Yes | — |
| Sleep tracking | Yes | Yes |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | — | Yes |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Sport profiles | 160 | 150 |
| Connectivity | ||
| Wi-Fi | — | Wi-Fi 4 |
| Bluetooth | 5.2 | 5 |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | Yes | — |
| Platform | ||
| Operating system | — | Zepp OS |
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | iOS, Android |
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