Garmin fēnix 8
Multi-sport GPS · AMOLED · 16-day battery
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, Garmin fēnix 8 lands at 90 and Apple Watch Ultra 3 Aluminum 45mm at 95. That puts Apple Watch Ultra 3 Aluminum 45mm ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Garmin fēnix 8 if…
- ✓Two-week battery even with AMOLED
- ✓Best-in-class GPS tracking
- ✓Mic + speaker for calls
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 | Garmin fēnix 8 | Apple Watch Ultra 3 Aluminum 45mm |
|---|---|---|
| Display | AMOLED, 1.4″ | — |
| Battery | Up to 16 days | — |
| Water | 10 ATM | — |
| GPS | Multi-band GNSS | — |
| Chip | — | S11 SiP |
| Case | — | Aluminum 45mm |
| Release year | — | 2025 |
Garmin fēnix 8
- +Two-week battery even with AMOLED
- +Best-in-class GPS tracking
- +Mic + speaker for calls
- −Dated companion app
- −Expensive
- −Android notifications limited
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: Garmin fēnix 8 vs Apple Watch Ultra 3 Aluminum 45mm
Which is better, Garmin fēnix 8 or Apple Watch Ultra 3 Aluminum 45mm? +
Apple Watch Ultra 3 Aluminum 45mm scores 95 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.
Is Garmin fēnix 8 worth the price? +
At $999, Garmin fēnix 8 delivers a Specdex score of 90 — 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 Garmin fēnix 8 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.