44mm or 40mm aluminum case
All-day Retina Display
Brightness up to 1000 nits
OLED
LTPO
Warning signs when heart rate is too high or too low
Irregular heartbeat warning footnote 4
Low aerobic fitness notice
Sleep tracking
Sleep score
The vital signs app can record heart rate, respiratory rate, wrist temperature, and sleep duration. footnote 6
Body temperature sensing footnote 7
Menstrual cycle tracking supports retrospective estimation of ovulation day. footnote 8
SOS Emergency Contact footnote 9
Fall detection and car accident detection footnote 9
50-meter waterproof footnote 14
swim
Optional cellular watch models footnote 2
Supports 5G footnote 1
Gesture control, simply flip your wrist.
Gesture control: double-tap with two fingers.
The device can process Siri requests and also query health data. footnote 11
Find iPhone
Up to 18 hours footnote 15
Up to 32 hours in low power mode. footnote 15