vs
6.0Display9.8
8.2Build & durability5.1
Why is GTS 4 Mini better than BT20?
- Built-in GPSYes · BT20: No
Why is BT20 better than GTS 4 Mini?
- Screen size1.65″ vs 1.96″+19%
- Battery capacity270 mAh vs 350 mAh+30%
- Resolution (width)336 px vs 410 px+22%
- Pixel density309 ppi vs 331 ppi+7%
Specifications
Side by side
| Design & durability | ||
| Weight | 31.2 g | — |
| Thickness | 9.1 mm | — |
| Height | 36.7 mm | — |
| Width | 41.8 mm | — |
| Case material | Aluminium | — |
| Lens / cover glass | Tempered glass + | — |
| Water resistance | 5 ATM | 5 ATM |
| Ingress protection | — | IP68 |
| Water resistance (IPx) | — | IPx8 |
| Military-grade (MIL-STD-810) | — | Yes |
| Colours | — | Black |
| Display | ||
| Screen size | 1.65″ | 1.96″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 336 px | 410 px |
| Resolution (height) | 384 px | 502 px |
| Pixel density | 309 ppi | 331 ppi |
| Refresh rate | — | 60 Hz |
| Battery | ||
| Battery life (smartwatch mode) | 15 days | — |
| GPS battery life | 21 h | — |
| Battery capacity | 270 mAh | 350 mAh |
| Battery type | — | Li-Ion |
| Charging | Magnetic charger | — |
| Health sensors | ||
| Optical heart rate | — | Yes |
| Blood oxygen (SpO2) | — | Yes |
| Sleep tracking | Yes | — |
| Sensors | — | Accelerometer, heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | No |
| Sport profiles | 126 | — |
| Connectivity | ||
| NFC payments | — | No |
| LTE (cellular) | — | No |
| eSIM | — | No |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Speaker | — | Yes |
| Microphone | Yes | — |
| Platform | ||
| Operating system | Zepp OS | Proprietary OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | — |
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