Why is Tank M4 better than GSEMFW?
- Battery life (smartwatch mode)10 days vs 2 days5×
- Resolution (width)410 px vs 240 px+71%
Why is GSEMFW better than Tank M4?
- Weight60 g vs 38 g+58%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 47 mm |
| Weight | 60 g | 38 g |
| Case material | — | Plastic / polymer |
| Lens / cover glass | Gorilla Glas | — |
| Strap material | — | Silikon |
| Water resistance | 10 ATM | — |
| Water rating (maker) | 100 m / 10 bar / 10 ATM | — |
| Colours | — | Black |
| Display | ||
| Screen size | 1.96″ | — |
| Display technology | AMOLED | — |
| Panel | AMOLED | — |
| AMOLED / OLED display | Yes | — |
| Resolution (width) | 410 px | 240 px |
| Resolution (height) | 502 px | 240 px |
| Battery | ||
| Battery life (smartwatch mode) | 10 days | 2 days |
| Battery capacity | — | 600 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | — |
| Sleep tracking | Yes | — |
| Sensors | heart rate, SpO2 | heart rate |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Satellite systems | GPS | GPS |
| Connectivity | ||
| LTE (cellular) | — | Yes |
| Bluetooth | 5.3 | — |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
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