Amazfit T-Rex Ultra vs Apple Watch Series 11
The Verdict
The Amazfit T-Rex Ultra and Apple Watch Series 11 sit in the same category and end up appealing to slightly different buyers. The Apple Watch Series 11 is the cheaper of the two at $399 versus $450, a difference of about $51. The Apple Watch Series 11 is the newer release, which usually means a faster chipset and longer software support. Amazfit T-Rex Ultra stands out for excellent 20-day battery life with always-on display, while Apple Watch Series 11 is praised for hypertension detection for chronic high blood pressure. Use the side-by-side spec table below to compare cameras, displays, battery life and connectivity in detail and decide which one fits your priorities.
Who Should Buy
Buy the Amazfit T-Rex Ultra if…
- →Excellent 20-day battery life with always-on display
- →Dual-band six-satellite GPS for high accuracy
- →Rugged design with 15 military-grade certifications
Buy the Apple Watch Series 11 if…
- →Hypertension detection for chronic high blood pressure
- →Sleep score for sleep quality insights
- →24-hour battery life (up from 18h on Series 10)
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
Apple Watch Series 11
Pros
- Hypertension detection for chronic high blood pressure
- Sleep score for sleep quality insights
- 24-hour battery life (up from 18h on Series 10)
- 5G connectivity on cellular models
- 2x more scratch-resistant Ion-X glass
Cons
- Same S10 chip as Series 10
- Starting price increased to $399
- Still limited to one-day battery life
Full Specifications
| Spec | Amazfit T-Rex Ultra | Apple Watch Series 11 |
|---|---|---|
| Software | Zepp OS 2.0 | watchOS 26 |
| Body | ||
| Weight | 89 g | 34.6 g (42mm) / 43.1 g (46mm) |
| Case material | Stainless steel bezel, fiber-reinforced polymer case | Aluminum or Titanium (Grade 5) |
| Water resistance | 10 ATM, ISO 22810 certified for free-diving to 45m | IP6X, 50m WR |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 20 days typical use, 80 hours GPS | 24 hours |
| Display | ||
| Size | 1.39 inch | 42mm / 46mm |
| Type | AMOLED | Retina LTPO3 OLED |
| Always-on display | ||
| Resolution | 454 x 454 | 496 x 416 (46mm) |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.3 |
| Processor | ||
| Chipset | — | Apple S10 |
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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 Apple products. View full details for the Amazfit T-Rex Ultra or the Apple Watch Series 11.