45mm or 41mm aluminum or stainless steel case size
Carbon neutral combinations available1
Always-On Retina display
Up to 2000 nits
S9 SiP
Double tap gesture
Precision Finding for iPhone2
Blood Oxygen app3
ECG app4
High and low heart rate notifications4
Irregular rhythm notifications5
Low cardio notifications
Temperature sensing6
Cycle tracking with retrospective ovulation estimates7
Emergency SOS8
International emergency calling9
Fall Detection and Crash Detection8
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Water resistant11
Swimproof
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GPS
Available cellular connectivity13
Up to 18 hours normal use15
Up to 36 hours in Low Power Mode15
Fast charging16