Apple Watch Series 10
S10 SiP · 46 mm · Thinner case
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, Apple Watch Series 10 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 Apple Watch Series 10 if…
- ✓Brightest Series display yet
- ✓Noticeably thinner
- ✓Sleep apnea + health suite
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 | Apple Watch Series 10 | Apple Watch Ultra 3 Aluminum 45mm |
|---|---|---|
| Display | 46 mm LTPO Wide-angle OLED | — |
| Battery | 18 h (36 h low-power) | — |
| Water | 50 m | — |
| GPS | L1 | — |
| Chip | — | S11 SiP |
| Case | — | Aluminum 45mm |
| Release year | — | 2025 |
Apple Watch Series 10
- +Brightest Series display yet
- +Noticeably thinner
- +Sleep apnea + health suite
- −Still 18 h battery
- −iPhone required
- −No Ultra-grade GPS
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: Apple Watch Series 10 vs Apple Watch Ultra 3 Aluminum 45mm
Which is better, Apple Watch Series 10 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 Apple Watch Series 10 worth the price? +
At $399, Apple Watch Series 10 delivers a Specdex score of 90 — strongest in display.
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 Apple Watch Series 10 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.