Dimensions
Size comparison
T-Rex ProPro 4
| T-Rex Pro | Pro 4 | Difference | |
|---|---|---|---|
| Case size | 47.7 mm | 47 mm | +0.7 mm |
| Thickness | 13.5 mm | 9.9 mm | +3.6 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex Pro better than Pro 4?
- Screen size2″ vs 1.56″+28%
- Resolution (width)800 px vs 480 px+67%
Why is Pro 4 better than T-Rex Pro?
- Thickness13.5 mm vs 9.9 mm+36%
- Battery capacity390 mAh vs 440 mAh+13%
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 47 mm |
| Weight | 59.4 g | — |
| Thickness | 13.5 mm | 9.9 mm |
| Case material | — | Stainless steel |
| Water resistance | 10 ATM | — |
| Military-grade (MIL-STD-810) | Yes | — |
| Display | ||
| Screen size | 2″ | 1.56″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 800 px | 480 px |
| Resolution (height) | 890 px | 480 px |
| Pixel density | 598 ppi | — |
| Battery | ||
| Battery life (smartwatch mode) | — | 5 days |
| Battery capacity | 390 mAh | 440 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | — | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | heart rate, SpO2 |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Dual-band GPS | Yes | — |
| Offline maps | Yes | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Sport profiles | 120 | — |
| Connectivity | ||
| NFC payments | Yes | — |
| Bluetooth | 5 | 5.1 |
| Smart features | ||
| Voice assistant | Yes | — |
| Platform | ||
| Platform | Proprietary | — |
| Works with | — | iOS, Android |
| Chipset | — | Jieli AC7013A |
