46mm or 42mm aluminum or titanium case size
LTPO3 OLED Always‑On Retina display
Wide-angle OLED
Up to 2000 nits
Up to 40% brighter when viewed at an angle
ECG app1
High and low heart rate notifications1
Irregular rhythm notifications2
Low cardio fitness notifications
Sleep Tracking
Sleep apnea notifications3
Vitals app featuring heart rate, respiratory rate, wrist temperature, and sleep duration4
Temperature sensing5
Cycle Tracking with retrospective ovulation estimates6
Emergency SOS7
International emergency calling8
Fall Detection and Crash Detection7, 9
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