Home / Smartwatch / Comparison

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.

Apple Apple Watch Series 9 (45mm)
Apple
Apple Watch Series 9 (45mm)
$124
Check Price →
Apple Apple Watch Series 8 (45mm)
Apple
Apple Watch Series 8 (45mm)
$102
Check Price →
Spec-by-spec
SpecApple Apple Watch Series 9 (45mm)Apple Apple Watch Series 8 (45mm)
Price$124$102
Weight38.7g38.8g
ChipS9 SiPS8 SiP
Case45mm aluminium, GPS45mm aluminium, GPS
Display2000 nit always-on Retina1000 nit always-on Retina
Water50m, WR5050m, WR50
Sizes41mm and 45mm
Weight38.7g (Apple published)38.8g (Apple published)
SensorsTemperature, 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.
More Smartwatch comparisons
Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 11Apple Apple Watch Ultra 3 vs Apple Apple Watch SE (3rd Gen)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 10 (46mm)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 9 (45mm)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 8 (45mm)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 7 (45mm)