Amazfit T-Rex 2 vs Huawei Watch GT 3 Pro
The Verdict
Both watches excel at fitness tracking with excellent displays and custom processors, but serve different priorities. The Amazfit T-Rex 2 dominates endurance with up to 24 days of battery life and 45 hours of continuous GPS, making it ideal for outdoor enthusiasts and those wanting minimal charging. Its 10ATM water resistance surpasses the GT 3 Pro's 5ATM rating. However, the Huawei Watch GT 3 Pro justifies its $140 premium through superior build quality: titanium case with sapphire crystal glass weighs only 54g versus T-Rex 2's 66.5g, and includes ECG and skin temperature monitoring that T-Rex 2 lacks. The GT 3 Pro also offers NFC for payments and slightly better connectivity with Bluetooth 5.2. Display quality is comparable at 454x454 versus 466x466 resolution on nearly identical 47/46mm AMOLED screens. The T-Rex 2 delivers exceptional value for budget-conscious users prioritizing battery life and water sports performance. The GT 3 Pro appeals to those wanting premium materials, advanced health sensors, and NFC payments despite shorter 14-day battery life. Your choice depends on whether extended battery justifies the T-Rex 2's higher water rating and lower price, or premium construction and health features merit the GT 3 Pro's investment.
Who Should Buy
Buy the Amazfit T-Rex 2 if…
- →MIL-STD-810G rated for extreme temperature, humidity, and shock resistance
- →24-day battery life with 45 hours of continuous GPS tracking
- →10ATM water resistance for swimming and water sports
Buy the Huawei Watch GT 3 Pro if…
- →Premium titanium and sapphire crystal construction is luxurious
- →14-day battery life is outstanding for an AMOLED smartwatch
- →ECG and skin temperature monitoring for comprehensive health tracking
Category Scores
Pros & Cons
Amazfit T-Rex 2
Pros
- MIL-STD-810G rated for extreme temperature, humidity, and shock resistance
- 24-day battery life with 45 hours of continuous GPS tracking
- 10ATM water resistance for swimming and water sports
- Dual-band GPS for accurate outdoor positioning
- AMOLED display is vibrant and readable in sunlight
Cons
- 66.5 g is heavy — can be uncomfortable for sleep tracking
- No NFC or cellular connectivity
- Zepp OS has limited smart features and app support
- No ECG monitoring
- Bulky design may not suit formal or everyday casual wear
Huawei Watch GT 3 Pro
Pros
- Premium titanium and sapphire crystal construction is luxurious
- 14-day battery life is outstanding for an AMOLED smartwatch
- ECG and skin temperature monitoring for comprehensive health tracking
- Sapphire crystal is extremely scratch resistant
- Dual-band GPS for accurate outdoor tracking
Cons
- HarmonyOS has very limited third-party app support
- No Google Play Store or Apple App Store access
- No cellular option — requires phone for notifications
- Limited compatibility with iOS — best with Huawei phones
- NFC payments are region-restricted
Full Specifications
| Spec | Amazfit T-Rex 2 | Huawei Watch GT 3 Pro |
|---|---|---|
| Software | Zepp OS | HarmonyOS 2.0 |
| Body | ||
| Weight | 66.5 g (without strap) | 54 g (without strap) |
| Case material | Fiber-reinforced polymer with metal buttons | Titanium with sapphire crystal glass |
| Water resistance | 10ATM | 5ATM (IP68) |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 24 days (typical), 45 hrs GPS | Up to 14 days |
| Display | ||
| Size | 47mm | 46mm |
| Type | AMOLED Always-On | AMOLED Always-On |
| Always-on display | ||
| Resolution | 454 x 454 | 466 x 466 |
| Processor | ||
| Chipset | Huami custom SoC | Huawei custom SoC |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.2 |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Amazfit products or all Huawei products. View full details for the Amazfit T-Rex 2 or the Huawei Watch GT 3 Pro.