Amazfit T-Rex Ultra vs Samsung Galaxy Watch FE
Amazfit T-Rex Ultra and Samsung Galaxy Watch FE serve different user priorities. Amazfit excels with exceptional battery longevity—up to 20 days typical use versus Samsung's 30 hours—making it ideal for outdoor enthusiasts and travelers avoiding frequent charging. Its rugged design with stainless steel bezel and 10 ATM water resistance suits extreme sports, while Samsung prioritizes smartwatch versatility with ECG capability, NFC payments, WiFi connectivity, and Wear OS 4's superior app ecosystem. Samsung's display offers better screen resolution (396x396) despite smaller 40mm size, though Amazfit's 1.39-inch AMOLED is more spacious. Performance-wise, Samsung's Exynos W920 processor and 1.5GB RAM deliver snappier responsiveness than Zepp OS 2.0. At $199, the Galaxy Watch FE provides exceptional value for fitness tracking and daily wear. However, if multi-week battery life and adventure-grade durability matter most, Amazfit T-Rex Ultra justifies its $449.99 premium. For most users balancing features and everyday usability, Samsung Galaxy Watch FE offers superior practical value.
Full Specifications
| Spec | Amazfit T-Rex Ultra | Samsung Galaxy Watch FE |
|---|---|---|
| Software | Zepp OS 2.0 | Wear OS 4 (One UI Watch 5) |
| Body | ||
| Weight | 89 g | 26.6 g |
| Case material | Stainless steel bezel, fiber-reinforced polymer case | Aluminum |
| Water resistance | 10 ATM, ISO 22810 certified for free-diving to 45m | 5ATM + IP68 |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 20 days typical use, 80 hours GPS | Up to 30 hrs (typical usage) |
| Display | ||
| Size | 1.39 inch | 40 mm |
| Type | AMOLED | Super AMOLED |
| Always-on display | ||
| Resolution | 454 x 454 | 396 x 396 |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.0 |
| Processor | ||
| RAM | — | 1.5 GB |
| Chipset | — | Exynos W920 |
Category Scores
Pros & Cons
Amazfit T-Rex Ultra
Pros
- Excellent 20-day battery life with always-on display
- Dual-band six-satellite GPS for high accuracy
- Rugged design with 15 military-grade certifications
- Free-diving rated to 45 meters
- Offline maps with route import support
Cons
- No ECG, skin temperature, or NFC payments
- No Wi-Fi or cellular connectivity
- Zepp OS app ecosystem is limited
- Heavier than most smartwatches at 89g
- No third-party app store
Samsung Galaxy Watch FE
Pros
- Full Galaxy Watch experience at the most affordable Samsung price
- ECG, SpO2, and heart rate monitoring included
- Always-on Super AMOLED display
- Wear OS 4 with Google apps and Samsung health features
- NFC for Samsung Pay and Google Wallet
Cons
- Older Exynos W920 chip is slower than Galaxy Watch 7
- No skin temperature sensor
- Only Bluetooth — no cellular LTE option
- 40mm only — no larger size option
Related Comparisons
Explore more in smartwatches, see all Amazfit products or all Samsung products. View full details for the Amazfit T-Rex Ultra or the Samsung Galaxy Watch FE.