Dimensions
Size comparison
GTS 4Ignite
| GTS 4 | Ignite | Difference | |
|---|---|---|---|
| Height | 36.5 mm | 43 mm | −6.5 mm |
| Width | 42.7 mm | 43 mm | −0.3 mm |
| Thickness | 9.9 mm | 8.5 mm | +1.4 mm |
| Weight | 27 g | 35 g | −8 g |
Drawn to the same scale from the official dimensions (front and side).
Why is GTS 4 better than Ignite?
- Battery life (smartwatch mode)8 days vs 4.5 days+78%
- GPS battery life28 h vs 18 h+56%
- AMOLED / OLED displayYes · Ignite: No
- Water resistance5 ATM vs 3 ATM+67%
- Screen size1.75″ vs 1.2″+46%
- Weight27 g vs 35 g+30%
- Battery capacity300 mAh vs 165 mAh+82%
- Pixel density341 ppi vs 200 ppi+70%
- Resolution (width)390 px vs 240 px+62%
Why is Ignite better than GTS 4?
- Thickness9.9 mm vs 8.5 mm+16%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 43 mm |
| Weight | 27 g | 35 g |
| Thickness | 9.9 mm | 8.5 mm |
| Height | 36.5 mm | 43 mm |
| Width | 42.7 mm | 43 mm |
| Case material | Aluminium | Stainless steel |
| Lens / cover glass | Tempered glass | — |
| Water resistance | 5 ATM | 3 ATM |
| Water rating (maker) | — | WR30 |
| Colours | — | Black-Silver, Black-Silver, White-Silver, Pink-Rose Gold, White-Silver |
| Display | ||
| Screen size | 1.75″ | 1.2″ |
| Display technology | AMOLED | LCD |
| Panel | AMOLED | TFT |
| AMOLED / OLED display | Yes | No |
| Touchscreen | Yes | Yes |
| Resolution (width) | 390 px | 240 px |
| Resolution (height) | 450 px | 240 px |
| Pixel density | 341 ppi | 200 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 8 days | 4.5 days |
| GPS battery life | 28 h | 18 h |
| GPS battery life (dual-band) | 16 h | — |
| Battery capacity | 300 mAh | 165 mAh |
| Battery type | — | Li-Pol |
| Charging | Magnetic charging | — |
| Health sensors | ||
| Optical heart rate | — | Yes |
| Skin temperature | — | No |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | Accelerometer |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Offline maps | — | No |
| Sport profiles | 150 | — |
| LED flashlight | — | No |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5 | — |
| Smart features | ||
| Speaker | Yes | — |
| Microphone | Yes | — |
| Platform | ||
| Operating system | Zepp OS | Polar OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | — |
