Apple Watch Series 8

Apple Watch Series 8

45mm or 41mm

Swimproof: IP6X dust resistant

Always-On Retina display: Upto 1000 nits

Blood Oxygen app

High and low heart rate notifications

Irregular rhythm notification

Temperature sensing

Cycle tracking with retrospective ovulation estimates

Emergency SOS , International emergency calling, Fall Detection, Crash Detection

Cellular available, Family Setup — pair multiple, watches with one iPhone