Amazfit T-Rex Ultra vs Apple Watch Series 10
Amazfit T-Rex Ultra excels in battery longevity, delivering up to 20 days of typical use versus Apple Watch Series 10's mere 18 hours—a massive advantage for outdoor enthusiasts and travelers. Apple's offering counters with superior health features (ECG, skin temperature monitoring), a brighter, more responsive LTPO3 OLED display at 2000 nits, and NFC for seamless payments. Weighing just 30g versus 89g, the Apple watch feels significantly lighter and more refined for daily wear. T-Rex Ultra's 10 ATM water resistance and fiber-reinforced polymer construction make it rugged enough for extreme conditions, while Apple's WR50 rating suits typical water exposure. Zepp OS provides solid functionality with excellent sports tracking, though watchOS 11 offers deeper iOS integration and more third-party apps. For users prioritizing battery life and durability in harsh environments, T-Rex Ultra wins decisively. However, those valuing comprehensive health monitoring, premium design, and ecosystem integration should choose the Apple Watch Series 10.
Full Specifications
| Spec | Amazfit T-Rex Ultra | Apple Watch Series 10 |
|---|---|---|
| Software | Zepp OS 2.0 | watchOS 11 |
| Body | ||
| Weight | 89 g | 30 g (42mm aluminum) |
| Case material | Stainless steel bezel, fiber-reinforced polymer case | Aluminum (Titanium option available) |
| Water resistance | 10 ATM, ISO 22810 certified for free-diving to 45m | WR50 (50m) + IP6X dust resistant |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 20 days typical use, 80 hours GPS | Up to 18 hours normal use, up to 36 hours in Low Power Mode |
| Display | ||
| Size | 1.39 inch | 42mm (1.96") |
| Type | AMOLED | LTPO3 OLED Always-On Retina with wide-angle OLED, up to 2000 nits |
| Always-on display | ||
| Resolution | 454 x 454 | 374 x 446 |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.3 |
| Processor | ||
| RAM | — | 1 GB |
| Chipset | — | Apple S10 SiP |
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
Apple Watch Series 10
Pros
- Thinnest and lightest Apple Watch ever at just 9.7mm thick
- New wide-angle OLED display is significantly brighter at off-angles
- Larger 42mm and 46mm case sizes with bigger displays in slimmer body
- Sleep apnea detection and improved health tracking via watchOS 11
- Faster charging — up to 80% in about 30 minutes
Cons
- Battery life is still just 18 hours, behind most competitors
- Blood oxygen sensing disabled on US units due to patent dispute
- No major performance jump over Series 9's S9 chip
- Cellular model costs an extra $100
- Requires an iPhone, no Android compatibility
Related Comparisons
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 10.