vs
8.8Display7.5
8.2Battery life8.4
9.6Health tracking8.3
9.5Sports & outdoor8.2
4.1Smart features3.2
7.3Build & durability6.5
Dimensions
Size comparison
T-Rex Ultra 2Fenix 9 51mm
| T-Rex Ultra 2 | Fenix 9 51mm | Difference | |
|---|---|---|---|
| Height | 51 mm | 51 mm | = |
| Width | 51 mm | 51 mm | = |
| Thickness | 14.3 mm | 14.7 mm | −0.4 mm |
| Weight | 89 g | 91 g | −2 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex Ultra 2 better than Fenix 9 51mm?
- Battery life (smartwatch mode)30 days vs 29 days+3%
- Sport profiles180 vs 99+82%
- Screen size1.5″ vs 1.4″+7%
- GPS battery life (dual-band)50 h vs 45 h+11%
- Resolution (width)480 px vs 454 px+6%
- Thickness14.3 mm vs 14.7 mm+3%
Why is Fenix 9 51mm better than T-Rex Ultra 2?
- GPS battery life40 h vs 54 h+35%
Specifications
Side by side
| Design & durability | ||
| Case size | 51 mm | 51 mm |
| Weight | 89.2 g | 91 g |
| Thickness | 14.3 mm | 14.7 mm |
| Height | 51 mm | 51 mm |
| Width | 51 mm | 51 mm |
| Case material | Plastic / polymer | Titanium |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire glass | sapphire crystal |
| Strap material | — | silicone |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | — | 10 ATM |
| Rated dive depth | — | 40 m |
| Display | ||
| Screen size | 1.5″ | 1.4″ |
| Display technology | AMOLED | AMOLED |
| Panel | AMOLED | AMOLED |
| AMOLED / OLED display | Yes | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 480 px | 454 px |
| Resolution (height) | 480 px | 454 px |
| Pixel density | 322 ppi | 324 ppi |
| Peak brightness | 3,000 nits | — |
| Battery | ||
| Battery life (smartwatch mode) | 30 days | 29 days |
| Battery saver mode | — | 42 days |
| GPS battery life | 40 h | 54 h |
| GPS battery life (dual-band) | 50 h | 45 h |
| Battery capacity | 870 mAh | — |
| Battery type | — | Lithium ion |
| Wireless charging | — | No |
| Charging | — | Garmin proprietary plug charger |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | Yes | Yes |
| Temperature sensor | Yes | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | 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, Ambient light sensor, Depth sensor |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Offline maps | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | 180 | 99 |
| Dive mode | — | Yes |
| LED flashlight | Yes | Yes |
| Connectivity | ||
| NFC payments | — | Yes |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | — |
| ANT+ sensors | — | Yes |
| Smart features | ||
| Calls from the wrist | Yes | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | Yes | Yes |
| Music on the watch | Yes | Yes |
| Storage | — | 64 GB |
| Third-party apps | — | Yes |
| Platform | ||
| Operating system | — | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | iOS, Android |
