Apple Apple Watch Series 9 (45mm) vs Apple Apple Watch Series 8 (45mm)
Apple Apple Watch Series 9 (45mm) ($124) vs Apple Apple Watch Series 8 (45mm) ($102) — 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 Series 8 (45mm) |
| Price | $124 | $102 |
| Weight | 38.7g | 38.8g |
| Chip | S9 SiP | S8 SiP |
| Case | 45mm aluminium, GPS | 45mm aluminium, GPS |
| Display | 2000 nit always-on Retina | 1000 nit always-on Retina |
| Water | 50m, WR50 | 50m, WR50 |
| Sizes | 41mm and 45mm | — |
| Weight | 38.7g (Apple published) | 38.8g (Apple published) |
| Sensors | — | Temperature, ECG, blood oxygen |
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 Series 8 (45mm)
- Full sensor suite including ECG and temperature
- Crash Detection
- Cheap for a watch with this much hardware
- 1000 nits looks dim next to a Series 9
- Same 18 hour battery
- Design is three generations old
Apple Apple Watch Series 8 (45mm) is the better value at $102. If weight matters most, Apple Apple Watch Series 9 (45mm) carries lighter at 38.7g. Both are part of our curated smartwatch index — tap through to check current pricing.