Dimensions
Size comparison
T-Rex 3501
| T-Rex 3 | 501 | Difference | |
|---|---|---|---|
| Case size | 48.5 mm | 46 mm | +2.5 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex 3 better than 501?
- Battery capacity700 mAh vs 340 mAh2.1×
- Screen size1.5″ vs 1.43″+5%
Why is 501 better than T-Rex 3?
501 has no measurable advantages in this pair.
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 46 mm |
| Weight | 68.3 g | — |
| Thickness | 13.8 mm | — |
| Height | 48.5 mm | — |
| Width | 48.5 mm | — |
| Case material | Stainless steel | — |
| Lens / cover glass | Gorilla Glass | — |
| Strap material | — | Gummi |
| Water resistance | 10 ATM | — |
| Colours | — | Black |
| Display | ||
| Screen size | 1.5″ | 1.43″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 480 px | — |
| Resolution (height) | 480 px | — |
| Pixel density | 322 ppi | — |
| Battery | ||
| Battery life (smartwatch mode) | 27 days | — |
| Battery saver mode | 40 days | — |
| Battery capacity | 700 mAh | 340 mAh |
| Charging | Magnetic charging base | — |
| Health sensors | ||
| Optical heart rate | Yes | — |
| Blood oxygen (SpO2) | Yes | — |
| Temperature sensor | Yes | — |
| Sleep tracking | Yes | — |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GPS |
| Offline maps | Yes | — |
| Barometric altimeter | Yes | — |
| Compass | Yes | — |
| Sport profiles | 177 | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5.2 | 5.2 |
| Smart features | ||
| Microphone | Yes | — |
| Voice assistant | Yes | — |
| Music on the watch | Yes | — |
| Platform | ||
| Platform | Proprietary | — |
| Works with | iOS, Android | Android |
