vs
9.7Display8.8
9.0Battery life8.2
9.6Health tracking9.6
9.5Sports & outdoor9.5
4.1Smart features4.1
8.6Build & durability7.3
Dimensions
Size comparison
T-Rex 3 ProT-Rex Ultra 2
| T-Rex 3 Pro | T-Rex Ultra 2 | Difference | |
|---|---|---|---|
| Height | 48 mm | 51 mm | −3 mm |
| Width | 48 mm | 51 mm | −3 mm |
| Thickness | 14 mm | 14.3 mm | −0.3 mm |
| Weight | 74 g | 89 g | −15 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex 3 Pro better than T-Rex Ultra 2?
- GPS battery life85 h vs 40 h2.1×
- Weight74.5 g vs 89.2 g+20%
- Pixel density466 ppi vs 322 ppi+45%
- Thickness14 mm vs 14.3 mm+2%
Why is T-Rex Ultra 2 better than T-Rex 3 Pro?
- Battery life (smartwatch mode)25 days vs 30 days+20%
- GPS battery life (dual-band)38 h vs 50 h+32%
- Battery capacity700 mAh vs 870 mAh+24%
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 51 mm |
| Weight | 74.5 g | 89.2 g |
| Thickness | 14 mm | 14.3 mm |
| Height | 48 mm | 51 mm |
| Width | 48 mm | 51 mm |
| Case material | Plastic / polymer | Plastic / polymer |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire glass | Sapphire glass |
| Water resistance | 10 ATM | 10 ATM |
| Display | ||
| Screen size | 1.5″ | 1.5″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 480 px | 480 px |
| Resolution (height) | 480 px | 480 px |
| Pixel density | 466 ppi | 322 ppi |
| Peak brightness | 3,000 nits | 3,000 nits |
| Battery | ||
| Battery life (smartwatch mode) | 25 days | 30 days |
| GPS battery life | 85 h | 40 h |
| GPS battery life (dual-band) | 38 h | 50 h |
| Battery capacity | 700 mAh | 870 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Skin temperature | Yes | Yes |
| Temperature sensor | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Offline maps | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Sport profiles | 180 | 180 |
| LED flashlight | Yes | Yes |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Calls from the wrist | Yes | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | Yes | Yes |
| Music on the watch | Yes | Yes |
| Platform | ||
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | Android, iOS |
