Features
Advanced health, safety, and activity features provide powerful insights and help when you need it. Redesigned apps in watchOS give you more information at a glance. Advanced health features - Monitor your blood oxygen level. Take an electrocardiogram at any time. "Receive notifications if you experience an irregular heart rhythm. See how much time you spent in REM sleep, core sleep, or deep sleep with sleep stages" Temperature sensing provides insights into your overall health and cycle tracking. The Workout app gives you a variety of training modes, plus advanced metrics for more insight into your workout performance. Fall and accident detection enable you to contact emergency services in the event of a hard fall or serious car accident "Emergency SOS lets you call for help with the push of a button. Electrical heart rate sensor - Ambient light sensor - Third-generation optical heart rate sensor" Compass Always-on altimeter High-power accelerometer Hyperdynamic range gyroscope Water resistance