vs
8.8Display8.4
8.2Battery life8.3
9.6Health tracking4.9
9.5Sports & outdoor4.2
4.1Smart features6.5
7.3Build & durability5.0
Dimensions
Size comparison
T-Rex Ultra 2Pace 4 Pro
| T-Rex Ultra 2 | Pace 4 Pro | Difference | |
|---|---|---|---|
| Height | 51 mm | 47.6 mm | +3.4 mm |
| Width | 51 mm | 47.6 mm | +3.4 mm |
| Thickness | 14.3 mm | 11.8 mm | +2.5 mm |
| Weight | 89 g | 51 g | +38 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex Ultra 2 better than Pace 4 Pro?
- Battery life (smartwatch mode)30 days vs 21 days+43%
- Water resistance10 ATM vs 5 ATM2×
- Sport profiles180 vs 315.8×
- Screen size1.5″ vs 1.47″+2%
- GPS battery life (dual-band)50 h vs 40 h+25%
- Resolution (width)480 px vs 466 px+3%
Why is Pace 4 Pro better than T-Rex Ultra 2?
- GPS battery life40 h vs 60 h+50%
- Weight89.2 g vs 51 g+75%
- Thickness14.3 mm vs 11.8 mm+21%
Specifications
Side by side
| Design & durability | ||
| Case size | 51 mm | 48 mm |
| Weight | 89.2 g | 51 g |
| Thickness | 14.3 mm | 11.8 mm |
| Height | 51 mm | 47.6 mm |
| Width | 51 mm | 47.6 mm |
| Case material | Plastic / polymer | Titanium |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire glass | Sapphire Glass |
| Strap material | — | Silicone / Nylon |
| Water resistance | 10 ATM | 5 ATM |
| Water rating (maker) | — | 5 ATM |
| Display | ||
| Screen size | 1.5″ | 1.47″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | LTPO AMOLED Display |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 480 px | 466 px |
| Resolution (height) | 480 px | 466 px |
| Pixel density | 322 ppi | 317 ppi |
| Peak brightness | 3,000 nits | — |
| Battery | ||
| Battery life (smartwatch mode) | 30 days | 21 days |
| Battery life with always-on display | — | 7 days |
| GPS battery life | 40 h | 60 h |
| GPS battery life (dual-band) | 50 h | 40 h |
| Battery capacity | 870 mAh | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | Speaker to take hands-free calls or play activity alerts out-loud., Microphone to record training logs, use voice commands, and save Voice Pins, Optical Heart Rate Monitor, Barometric Altimeter, Accelerometer, Gyroscope, 3D Compass, Thermometer ), Optical Pulse Oximeter, Electrical Heart Rate Sensor for HRV and Wellness Checks |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Offline maps | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | 180 | 31 |
| LED flashlight | Yes | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | — |
| Smart features | ||
| Calls from the wrist | Yes | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | Yes | — |
| Music on the watch | Yes | Yes |
| Storage | — | 32 GB |
| Platform | ||
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | — |
