vs
8.0Display5.6
7.2Battery life7.3
4.9Health tracking4.9
6.0Sports & outdoor6.6
6.3Build & durability5.4
Dimensions
Size comparison
T-Rex UltraInstinct 3 50mm AMOLED
| T-Rex Ultra | Instinct 3 50mm AMOLED | Difference | |
|---|---|---|---|
| Height | 47.3 mm | 50 mm | −2.7 mm |
| Width | 47.3 mm | 50 mm | −2.7 mm |
| Thickness | 13.4 mm | 14.4 mm | −1 mm |
| Weight | 89 g | 59 g | +30 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex Ultra better than Instinct 3 50mm AMOLED?
- GPS battery life46 h vs 40 h+15%
- Screen size1.39″ vs 1.3″+7%
- Resolution (width)454 px vs 416 px+9%
- Thickness13.4 mm vs 14.4 mm+7%
Why is Instinct 3 50mm AMOLED better than T-Rex Ultra?
- Battery life (smartwatch mode)20 days vs 24 days+20%
- Weight89 g vs 59 g+51%
- Battery saver mode25 days vs 30 days+20%
- GPS battery life (dual-band)28 h vs 30 h+7%
Specifications
Side by side
| Design & durability | ||
| Case size | — | 50 mm |
| Weight | 89 g | 59 g |
| Thickness | 13.4 mm | 14.4 mm |
| Height | 47.3 mm | 50 mm |
| Width | 47.3 mm | 50 mm |
| Case material | Plastic / polymer | Aluminium |
| Sapphire crystal | — | No |
| Lens / cover glass | — | Chemically Strengthened Glass |
| Strap material | — | silicone |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | — | 10 ATM |
| Display | ||
| Screen size | 1.39″ | 1.3″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Always-on display | — | Yes |
| Touchscreen | Yes | — |
| Resolution (width) | 454 px | 416 px |
| Resolution (height) | 454 px | 416 px |
| Pixel density | 326 ppi | 320 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 20 days | 24 days |
| Battery life with always-on display | — | 9 days |
| Battery saver mode | 25 days | 30 days |
| GPS battery life | 46 h | 40 h |
| GPS battery life (dual-band) | 28 h | 30 h |
| Battery capacity | 500 mAh | — |
| Battery type | — | Lithium ion |
| 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, QZSS, BeiDou, 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, BDS, QZSS |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | — | 96 |
| LED flashlight | — | Yes |
| Connectivity | ||
| NFC payments | — | Yes |
| Wi-Fi | Wi-Fi 4 | — |
| Bluetooth | 5 | — |
| ANT+ sensors | — | Yes |
| Smart features | ||
| Storage | — | 4 GB |
| Third-party apps | — | Yes |
| Platform | ||
| Operating system | Zepp OS | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | iOS, Android |
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