vs
8.0Display2.6
7.2Battery life7.4
4.9Health tracking4.9
6.0Sports & outdoor4.2
6.3Build & durability5.6
Dimensions
Size comparison
T-Rex UltraInstinct 2 Solar
| T-Rex Ultra | Instinct 2 Solar | Difference | |
|---|---|---|---|
| Height | 47.3 mm | 45 mm | +2.3 mm |
| Width | 47.3 mm | 45 mm | +2.3 mm |
| Thickness | 13.4 mm | 14.5 mm | −1.1 mm |
| Weight | 89 g | 53 g | +36 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex Ultra better than Instinct 2 Solar?
- GPS battery life46 h vs 30 h+53%
- AMOLED / OLED displayYes · Instinct 2 Solar: No
- Resolution (width)454 px vs 176 px2.6×
- Pixel density326 ppi vs 139 ppi2.3×
- Screen size1.39″ vs 1.27″+9%
- Thickness13.4 mm vs 14.5 mm+8%
Why is Instinct 2 Solar better than T-Rex Ultra?
- Battery life (smartwatch mode)20 days vs 28 days+40%
- Weight89 g vs 53 g+68%
- Battery saver mode25 days vs 65 days2.6×
Specifications
Side by side
| Design & durability | ||
| Case size | — | 45 mm |
| Weight | 89 g | 53 g |
| Thickness | 13.4 mm | 14.5 mm |
| Height | 47.3 mm | 45 mm |
| Width | 47.3 mm | 45 mm |
| Case material | Plastic / polymer | Plastic / polymer |
| Sapphire crystal | — | No |
| Lens / cover glass | — | Power Glass™ |
| Strap material | — | silicone |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | — | 10 ATM |
| Display | ||
| Screen size | 1.39″ | 1.27″ |
| Display technology | AMOLED | Memory-in-pixel (transflective) |
| Panel | AMOLED | Monochrome, sunlight-visible, transflective memory-in-pixel |
| AMOLED / OLED display | Yes | No |
| Always-on display | — | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 454 px | 176 px |
| Resolution (height) | 454 px | 176 px |
| Pixel density | 326 ppi | 139 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 20 days | 28 days |
| Battery saver mode | 25 days | 65 days |
| GPS battery life | 46 h | 30 h |
| GPS battery life (dual-band) | 28 h | — |
| Battery capacity | 500 mAh | — |
| Battery type | — | Lithium ion |
| Solar charging | — | Yes |
| Wireless charging | — | No |
| Charging | Magnetic charging base | Garmin proprietary plug charger |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Temperature sensor | — | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | — | Yes |
| Sensors | — | GPS, GLONASS, Galileo, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Accelerometer, Thermometer |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GLONASS, GALILEO |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | — | 50 |
| Connectivity | ||
| NFC payments | — | Yes |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5 | — |
| ANT+ sensors | — | Yes |
| Smart features | ||
| Storage | — | 0.03 GB |
| Third-party apps | — | Yes |
| Platform | ||
| Operating system | Zepp OS | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | iOS, Android |
