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^
Faster on-device Siri with health data access^
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
Supports Family Setup (GPS + Cellular models)14
Connect family members who don’t have an iPhone
Up to 18 hours normal use16
Up to 36 hours in Low Power Mode16
Fast charging17
