Apple
Apple Watch Ultra 3
S11 SiP · 49 mm titanium · Satellite
95
/ 100
From $799
VS
Apple Watch Ultra 3 wins by 5
Garmin
Garmin fēnix 8
Multi-sport GPS · AMOLED · 16-day battery
90
/ 100
From $999
Specdex verdict
Apple Watch Ultra 3 takes it — here’s why.
In our weighted Specdex score, Apple Watch Ultra 3 lands at 95 and Garmin fēnix 8 at 90. That puts Apple Watch Ultra 3 ahead by 5 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Apple Watch Ultra 3 if…
- ✓Satellite connectivity for emergency SOS off-grid
- ✓New blood-pressure trends
- ✓Action Button gets gesture support
Pick Garmin fēnix 8 if…
- ✓Two-week battery even with AMOLED
- ✓Best-in-class GPS tracking
- ✓Mic + speaker for calls
Score breakdown
Apple Watch Ultra 3
95 battery 82
display 96
fitness 96
health 97
durability 96
Garmin fēnix 8
90 battery 96
display 90
fitness 96
health 88
durability 92
Specs side-by-side
Spec
Apple Watch Ultra 3
Garmin fēnix 8
Chip
Apple S11 SiP
—
Display
49 mm LTPO OLED, 3000 nits
AMOLED, 1.4″
Battery
48 h (96 h low-power)
Up to 16 days
Water
100 m
10 ATM
Release year
2025
—
GPS
—
Multi-band GNSS
Apple Watch Ultra 3
Pros
- +Satellite connectivity for emergency SOS off-grid
- +New blood-pressure trends
- +Action Button gets gesture support
Cons
- −~48 h battery still
- −Expensive
- −Large case
Garmin fēnix 8
Pros
- +Two-week battery even with AMOLED
- +Best-in-class GPS tracking
- +Mic + speaker for calls
Cons
- −Dated companion app
- −Expensive
- −Android notifications limited
FAQ: Apple Watch Ultra 3 vs Garmin fēnix 8
Which is better, Apple Watch Ultra 3 or Garmin fēnix 8? +
Apple Watch Ultra 3 scores 95 on our weighted rubric — ahead by 5. Your best pick depends on the sub-scores above.
Is Apple Watch Ultra 3 worth the price? +
At $799, Apple Watch Ultra 3 delivers a Specdex score of 95 — strongest in health.
Is Garmin fēnix 8 worth the price? +
At $999, Garmin fēnix 8 delivers a Specdex score of 90 — strongest in battery.
Does Apple Watch Ultra 3 or Garmin fēnix 8 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.