vs
8.8Display4.0
8.2Battery life8.8
9.6Health tracking4.9
9.5Sports & outdoor6.2
7.3Build & durability5.5
Dimensions
Size comparison
T-Rex Ultra 2Instinct 3 50mm Solar
| T-Rex Ultra 2 | Instinct 3 50mm Solar | Difference | |
|---|---|---|---|
| Height | 51 mm | 50 mm | +1 mm |
| Width | 51 mm | 50 mm | +1 mm |
| Thickness | 14.3 mm | 14.4 mm | −0.1 mm |
| Weight | 89 g | 58 g | +31 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex Ultra 2 better than Instinct 3 50mm Solar?
- AMOLED / OLED displayYes · Instinct 3 50mm Solar: No
- Resolution (width)480 px vs 176 px2.7×
- Pixel density322 ppi vs 113 ppi2.8×
- Sapphire crystalYes · Instinct 3 50mm Solar: No
- Sport profiles180 vs 94+91%
- GPS battery life (dual-band)50 h vs 34 h+47%
Why is Instinct 3 50mm Solar better than T-Rex Ultra 2?
- Battery life (smartwatch mode)30 days vs 40 days+33%
- GPS battery life40 h vs 60 h+50%
- Weight89.2 g vs 58 g+54%
- Screen size1.5″ vs 1.56″+4%
Specifications
Side by side
| Design & durability | ||
| Case size | 51 mm | 50 mm |
| Weight | 89.2 g | 58 g |
| Thickness | 14.3 mm | 14.4 mm |
| Height | 51 mm | 50 mm |
| Width | 51 mm | 50 mm |
| Case material | Plastic / polymer | Aluminium |
| Sapphire crystal | Yes | No |
| Lens / cover glass | Sapphire glass | Power Glass™ |
| Strap material | — | silicone |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | — | 10 ATM |
| Display | ||
| Screen size | 1.5″ | 1.56″ |
| 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) | 480 px | 176 px |
| Resolution (height) | 480 px | 176 px |
| Pixel density | 322 ppi | 113 ppi |
| Peak brightness | 3,000 nits | — |
| Battery | ||
| Battery life (smartwatch mode) | 30 days | 40 days |
| Battery saver mode | — | 100 days |
| GPS battery life | 40 h | 60 h |
| GPS battery life (dual-band) | 50 h | 34 h |
| Battery capacity | 870 mAh | — |
| Battery type | — | Lithium ion |
| Solar charging | — | Yes |
| Wireless charging | — | No |
| Charging | — | Garmin proprietary plug charger |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | GPS, GLONASS, Galileo, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | — | GLONASS, GALILEO |
| Offline maps | Yes | — |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | 180 | 94 |
| LED flashlight | Yes | Yes |
| Connectivity | ||
| NFC payments | — | Yes |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5.2 | — |
| ANT+ sensors | — | Yes |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Speaker | Yes | — |
| Microphone | Yes | — |
| Voice assistant | Yes | — |
| Music on the watch | Yes | — |
| Storage | — | 0.12 GB |
| Third-party apps | — | Yes |
| Platform | ||
| Operating system | — | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | iOS, Android |
