vs
9.7Display3.8
9.0Battery life8.2
9.6Health tracking4.9
9.5Sports & outdoor4.6
4.1Smart features6.5
8.6Build & durability4.7
Dimensions
Size comparison
T-Rex 3 ProApex 4 (46mm)
| T-Rex 3 Pro | Apex 4 (46mm) | Difference | |
|---|---|---|---|
| Height | 48 mm | 46.2 mm | +1.8 mm |
| Width | 48 mm | 46.2 mm | +1.8 mm |
| Thickness | 14 mm | 13.7 mm | +0.3 mm |
| Weight | 74 g | 64 g | +10 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T-Rex 3 Pro better than Apex 4 (46mm)?
- GPS battery life85 h vs 53 h+60%
- Water resistance10 ATM vs 5 ATM2×
- AMOLED / OLED displayYes · Apex 4 (46mm): No
- Battery life (smartwatch mode)25 days vs 24 days+4%
- Sport profiles180 vs 365×
- Pixel density466 ppi vs 200 ppi2.3×
- Screen size1.5″ vs 1.3″+15%
- Resolution (width)480 px vs 260 px+85%
Why is Apex 4 (46mm) better than T-Rex 3 Pro?
- Weight74.5 g vs 64 g+16%
- GPS battery life (dual-band)38 h vs 41 h+8%
- Thickness14 mm vs 13.7 mm+2%
Specifications
Side by side
| Design & durability | ||
| Case size | 48 mm | 46 mm |
| Weight | 74.5 g | 64 g |
| Thickness | 14 mm | 13.7 mm |
| Height | 48 mm | 46.2 mm |
| Width | 48 mm | 46.2 mm |
| Case material | Plastic / polymer | Titanium |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Sapphire glass | Sapphire Glass |
| Strap material | — | Silicone / Nylon |
| Water resistance | 10 ATM | 5 ATM |
| Water rating (maker) | — | 5 ATM |
| Display | ||
| Screen size | 1.5″ | 1.3″ |
| Display technology | AMOLED | Memory-in-pixel (transflective) |
| Panel | AMOLED | 3rd Generation Memory-in-Pixel touch screen |
| AMOLED / OLED display | Yes | No |
| Always-on display | — | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 480 px | 260 px |
| Resolution (height) | 480 px | 260 px |
| Pixel density | 466 ppi | 200 ppi |
| Peak brightness | 3,000 nits | — |
| Battery | ||
| Battery life (smartwatch mode) | 25 days | 24 days |
| GPS battery life | 85 h | 53 h |
| GPS battery life (dual-band) | 38 h | 41 h |
| Battery capacity | 700 mAh | — |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | — | Yes |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | Yes |
| HRV tracking | — | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | — | Speaker to take hands-free calls or play activity alerts out-loud., Microphone to record training logs, use voice commands, and save Voice Pins, 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 | 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 | 36 |
| LED flashlight | Yes | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5.2 | — |
| Smart features | ||
| Calls from the wrist | Yes | Yes |
| Speaker | Yes | Yes |
| Microphone | Yes | Yes |
| Voice assistant | Yes | — |
| Music on the watch | Yes | Yes |
| Storage | — | 32 GB |
| Platform | ||
| Platform | Proprietary | Proprietary |
| Works with | Android, iOS | — |
