Amazfit T-Rex 3
AMOLED · 27-day battery · Multi-band GPS
Apple Watch Ultra 3 Aluminum 45mm
S11 SiP · Aluminum 45mm · 2025
Apple Watch Ultra 3 Aluminum 45mm takes it — here’s why.
In our weighted Specdex score, Amazfit T-Rex 3 lands at 88 and Apple Watch Ultra 3 Aluminum 45mm at 95. That puts Apple Watch Ultra 3 Aluminum 45mm ahead by 7 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Amazfit T-Rex 3 if…
- ✓27-day battery life
- ✓Multi-band GPS at $299
- ✓Free Zepp app — no subscription
Pick Apple Watch Ultra 3 Aluminum 45mm if…
- ✓Satellite connectivity (Ultra 3)
- ✓Blood pressure trends (Series 11)
- ✓watchOS 12
Score breakdown
Specs side-by-side
| Spec | Amazfit T-Rex 3 | Apple Watch Ultra 3 Aluminum 45mm |
|---|---|---|
| Case | 48 mm steel + plastic | Aluminum 45mm |
| Display | 1.5″ AMOLED, 480×480 | — |
| Chipset | Custom MCU | — |
| Battery | 27 days standard / 7 days heavy use | — |
| Connectivity | GPS multi-band, BT 5.2 | — |
| Water resist | 10 ATM + IP69K | — |
| Chip | — | S11 SiP |
| Release year | — | 2025 |
Amazfit T-Rex 3
- +27-day battery life
- +Multi-band GPS at $299
- +Free Zepp app — no subscription
- −App polish trails Garmin
- −Limited third-party apps
- −No LTE option
Apple Watch Ultra 3 Aluminum 45mm
- +Satellite connectivity (Ultra 3)
- +Blood pressure trends (Series 11)
- +watchOS 12
- −iPhone-required
- −Battery ~18 h on Series, ~48 h on Ultra
- −Premium pricing
FAQ: Amazfit T-Rex 3 vs Apple Watch Ultra 3 Aluminum 45mm
Which is better, Amazfit T-Rex 3 or Apple Watch Ultra 3 Aluminum 45mm? +
Apple Watch Ultra 3 Aluminum 45mm scores 95 on our weighted rubric — ahead by 7. Your best pick depends on the sub-scores above.
Is Amazfit T-Rex 3 worth the price? +
At $299, Amazfit T-Rex 3 delivers a Specdex score of 88 — strongest in battery.
Is Apple Watch Ultra 3 Aluminum 45mm worth the price? +
At $799, Apple Watch Ultra 3 Aluminum 45mm delivers a Specdex score of 95 — strongest in health.
Does Amazfit T-Rex 3 or Apple Watch Ultra 3 Aluminum 45mm last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.