Dimensions
Size comparison
T-Rex 3Apex 2
| T-Rex 3 | Apex 2 | Difference | |
|---|---|---|---|
| Height | 48.5 mm | 42.8 mm | +5.7 mm |
| Width | 48.5 mm | 43 mm | +5.5 mm |
| Thickness | 13.8 mm | 12.8 mm | +0.9 mm |
| Weight | 68 g | 53 g | +15 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex 3 better than Apex 2?
- Battery life (smartwatch mode)27 days vs 13 days2.1×
- Water resistance10 ATM vs 5 ATM2×
- AMOLED / OLED displayYes · Apex 2: No
- Sport profiles170 vs 354.9×
- Screen size1.5″ vs 1.2″+25%
- Resolution (width)480 px vs 240 px2×
- Pixel density322 ppi vs 200 ppi+61%
Why is Apex 2 better than T-Rex 3?
- GPS battery life28 h vs 40 h+43%
- Weight68.3 g vs 53 g+29%
- Thickness13.8 mm vs 12.8 mm+7%
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 43 mm |
| Weight | 68.3 g | 53 g |
| Thickness | 13.8 mm | 12.8 mm |
| Height | 48.5 mm | 42.8 mm |
| Width | 48.5 mm | 43 mm |
| Case material | Stainless steel | Titanium |
| Sapphire crystal | — | Yes |
| Lens / cover glass | Gorilla Glass | Sapphire Glass |
| Strap material | — | Silicone / Nylon |
| Water resistance | 10 ATM | 5 ATM |
| Water rating (maker) | — | 5 ATM |
| Display | ||
| Screen size | 1.5″ | 1.2″ |
| Display technology | AMOLED | Memory-in-pixel (transflective) |
| Panel | AMOLED | Touch Screen Always-On Memory LCD |
| AMOLED / OLED display | Yes | No |
| Always-on display | — | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 480 px | 240 px |
| Resolution (height) | 480 px | 240 px |
| Pixel density | 322 ppi | 200 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 27 days | 13 days |
| Battery saver mode | 40 days | — |
| GPS battery life | 28 h | 40 h |
| GPS battery life (dual-band) | 42 h | — |
| Battery capacity | 700 mAh | — |
| Charging | Magnetic charging base | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Temperature sensor | Yes | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | Optical Heart Rate Monitor, Barometric Altimeter, Accelerometer, Gyroscope, 3D Compass, Thermometer ), Optical Pulse Oximeter, Electrical Heart Rate Sensor for HRV and Wellness Checks |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | — |
| Satellite systems | — | GLONASS, GALILEO, BDS, QZSS |
| Offline maps | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | — | Yes |
| Sport profiles | 170 | 35 |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | — |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Microphone | Yes | — |
| Voice assistant | Yes | — |
| Music on the watch | Yes | Yes |
| Storage | — | 8 GB |
| Platform | ||
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | — |
