45mm or 41mm case sizes
50m water resistant7
Certified IP6X dust resistant
Always-On Retina display
Up to 1000 nits brightness
Blood Oxygen app2
ECG app3
High and low heart rate notifications
Irregular rhythm notification4
Cardio fitness notifications
Temperature sensing9
Cycle tracking with retrospective ovulation estimates11
Emergency SOS6
International emergency calling5
Fall detection
Crash Detection6
High-g accelerometer
Cellular available
