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Apple Watch Series 11 vs Apple Watch Ultra 3

Apple Watch Series 11 (2025) and Apple Watch Ultra 3 (2025) compared on specs, battery, and Amazon United Kingdom price links. Rankings stay independent of those links.

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Spec differences

SpecApple Watch Series 11Apple Watch Ultra 3Edge
Launch year20252025Tie
Case size42mm / 46mm49mm
Case / glassAluminum or other listed finishesTitanium case
DisplayAlways-On Retina OLEDLarge always-on Retina display
Typical batteryUp to about 24 hours, longer with Low Power ModeUp to about 42 hours normal use, longer in Low Power Mode
Water resistance50 metres / WR50WR100
OSwatchOSwatchOS
Works withiPhone requirediPhone required
GPSYesYes
LTEYesYes
NFC / paymentsYesYes
CallsYesYes
SpO2YesYes
ECGYesYes
Sleep trackingYesYes
Overall8.88.6Watch Series 11
Battery score6.57.2Watch Ultra 3
Fitness8.98.5Watch Series 11
Value7.87.4Watch Series 11