Why is T-Rex Pro better than Tank M4?
- Resolution (width)800 px vs 410 px+95%
- Screen size2″ vs 1.96″+2%
Why is Tank M4 better than T-Rex Pro?
Tank M4 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | — |
| Weight | 59.4 g | 60 g |
| Thickness | 13.5 mm | — |
| Lens / cover glass | — | Gorilla Glas |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | — | 100 m / 10 bar / 10 ATM |
| Military-grade (MIL-STD-810) | Yes | — |
| Display | ||
| Screen size | 2″ | 1.96″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 800 px | 410 px |
| Resolution (height) | 890 px | 502 px |
| Pixel density | 598 ppi | — |
| Battery | ||
| Battery life (smartwatch mode) | — | 10 days |
| Battery capacity | 390 mAh | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GPS |
| Offline maps | Yes | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Sport profiles | 120 | — |
| Connectivity | ||
| NFC payments | Yes | — |
| Bluetooth | 5 | 5.3 |
| Smart features | ||
| Voice assistant | Yes | — |
| Platform | ||
| Platform | Proprietary | — |
| Works with | — | iOS, Android |
