vs
8.0Display8.4
7.2Battery life8.3
4.9Health tracking4.9
6.0Sports & outdoor4.2
6.3Build & durability5.0
Dimensions
Size comparison
T-Rex UltraPace 4 Pro
| T-Rex Ultra | Pace 4 Pro | Difference | |
|---|---|---|---|
| Height | 47.3 mm | 47.6 mm | −0.3 mm |
| Width | 47.3 mm | 47.6 mm | −0.3 mm |
| Thickness | 13.4 mm | 11.8 mm | +1.6 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 better than Pace 4 Pro?
- Water resistance10 ATM vs 5 ATM2×
- Pixel density326 ppi vs 317 ppi+3%
Why is Pace 4 Pro better than T-Rex Ultra?
- GPS battery life46 h vs 60 h+30%
- Weight89 g vs 51 g+75%
- Battery life (smartwatch mode)20 days vs 21 days+5%
- Screen size1.39″ vs 1.47″+6%
- GPS battery life (dual-band)28 h vs 40 h+43%
- Thickness13.4 mm vs 11.8 mm+14%
- Resolution (width)454 px vs 466 px+3%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 48 mm |
| Weight | 89 g | 51 g |
| Thickness | 13.4 mm | 11.8 mm |
| Height | 47.3 mm | 47.6 mm |
| Width | 47.3 mm | 47.6 mm |
| Case material | Plastic / polymer | Titanium |
| Sapphire crystal | — | Yes |
| Lens / cover glass | — | Sapphire Glass |
| Strap material | — | Silicone / Nylon |
| Water resistance | 10 ATM | 5 ATM |
| Water rating (maker) | — | 5 ATM |
| Display | ||
| Screen size | 1.39″ | 1.47″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | LTPO AMOLED Display |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 454 px | 466 px |
| Resolution (height) | 454 px | 466 px |
| Pixel density | 326 ppi | 317 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 20 days | 21 days |
| Battery life with always-on display | — | 7 days |
| Battery saver mode | 25 days | — |
| GPS battery life | 46 h | 60 h |
| GPS battery life (dual-band) | 28 h | 40 h |
| Battery capacity | 500 mAh | — |
| Charging | Magnetic charging base | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Temperature sensor | — | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | — | 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 |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | — | 31 |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | — |
| Smart features | ||
| Calls from the wrist | — | Yes |
| Speaker | — | Yes |
| Microphone | — | Yes |
| Music on the watch | — | Yes |
| Storage | — | 32 GB |
| Platform | ||
| Operating system | Zepp OS | — |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | — |
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