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Apple Apple Watch Series 4 vs Apple Apple Watch Ultra 4

Apple Apple Watch Series 4 ($73) vs Apple Apple Watch Ultra 4 ($799) — side-by-side specs, weight, pros and cons to help you pick the right smartwatch.

Apple Apple Watch Series 4
Apple
Apple Watch Series 4
$73
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Apple Apple Watch Ultra 4
Apple
Apple Watch Ultra 4
$799
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Spec-by-spec
SpecApple Apple Watch Series 4Apple Apple Watch Ultra 4
Price$73$799
Weight36.7g63g
ChipS4, 64-bit dual-coreS11
Display30% larger Retina OLED vs Series 3—
SensorsElectrical + optical heart sensor, ECG—
SafetyFall detection—
WR50m—
Weight36.7g (Apple published, 44mm Aluminum)~63g (sources vary 61.6 to 63.1g)
Case—49mm Titanium (Natural or Black)
Battery—50h / 84h Low Power
GPS—Dual-frequency L1+L5
Water—100m, EN13319 dive rated
Pros & Cons

Apple Apple Watch Series 4

  • First Apple Watch with an ECG sensor
  • Meaningfully larger display in the same case size class
  • Fall detection, a safety feature that debuted here
  • Digital Crown haptic feedback, still felt today
  • No always-on display
  • watchOS support window is closing
  • Speaker and mic are a generation behind current models
  • Battery health on a used unit is unverifiable before buying

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 4 is the better value at $73. Both are part of our curated smartwatch index — tap through to check current pricing.
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