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Apple Apple Watch Series 9 (45mm) vs Apple Apple Watch Ultra 4
Apple Apple Watch Series 9 (45mm) ($124) vs Apple Apple Watch Ultra 4 ($799) — side-by-side specs, weight, pros and cons to help you pick the right smartwatch.
Spec-by-spec
| Spec | Apple Apple Watch Series 9 (45mm) | Apple Apple Watch Ultra 4 |
|---|---|---|
| Price | $124 | $799 |
| Weight | 38.7g | 63g |
| Chip | S9 SiP | S11 |
| Case | 45mm aluminium, GPS | 49mm Titanium (Natural or Black) |
| Display | 2000 nit always-on Retina | — |
| Water | 50m, WR50 | 100m, EN13319 dive rated |
| Sizes | 41mm and 45mm | — |
| Weight | 38.7g (Apple published) | ~63g (sources vary 61.6 to 63.1g) |
| Battery | — | 50h / 84h Low Power |
| GPS | — | Dual-frequency L1+L5 |
Pros & Cons
Apple Apple Watch Series 9 (45mm)
- Double Tap works one-handed
- 2000 nit display is genuinely bright outdoors
- On-device Siri
- Same case design as the Series 7 and 8
- Battery still about 18 hours
- Blood oxygen disabled on some US units
Apple Apple Watch Ultra 4
- 50 hour battery, up from 42 on Ultra 3
- Natural and Black Titanium
- Dual-frequency GPS and 100m dive rating
- Programmable Action button
- $799
- iPhone only
- Same 49mm case as Ultra 3
Apple Apple Watch Series 9 (45mm) is the better value at $124. Both are part of our curated smartwatch index — tap through to check current pricing.
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