Why is Pro 4 Air better than Tank M4?
- Resolution (width)480 px vs 410 px+17%
Why is Tank M4 better than Pro 4 Air?
- Battery life (smartwatch mode)5 days vs 10 days2×
- Screen size1.56″ vs 1.96″+26%
Specifications
Side by side
| Design & durability | ||
| Case size | 47 mm | — |
| Weight | — | 60 g |
| Thickness | 9.9 mm | — |
| Case material | Stainless steel | — |
| Lens / cover glass | — | Gorilla Glas |
| Water resistance | — | 10 ATM |
| Water rating (maker) | — | 100 m / 10 bar / 10 ATM |
| Display | ||
| Screen size | 1.56″ | 1.96″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | Yes | — |
| Resolution (width) | 480 px | 410 px |
| Resolution (height) | 480 px | 502 px |
| Battery | ||
| Battery life (smartwatch mode) | 5 days | 10 days |
| Battery capacity | 440 mAh | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | Yes |
| Skin temperature | Yes | — |
| HRV tracking | Yes | — |
| Sleep tracking | Yes | Yes |
| Sensors | heart rate, SpO2 | heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | — | Yes |
| Satellite systems | — | GPS |
| Connectivity | ||
| Bluetooth | 5.1 | 5.3 |
| Platform | ||
| Works with | iOS, Android | iOS, Android |
| Chipset | Jieli AC7013A | — |
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