Temperature sensor provides retrospective ovulation estimates and advanced cycle tracking features

Measure your blood oxygen with a powerful sensor and app

Take an ECG anytime, anywhere! . Get high and low heart rate, and irregular rhythm notifications!

Advanced safety features, including Fall Detection, Emergency SOS, and Crash Detection

Enhanced Workout app with more advanced metrics and ways to train

A completely redesigned Compass app with waypoints and Backtrack

Track your daily activity on Apple Watch, and see your trends in the Fitness app on iPhone

The most crack-resistant front crystal yet on an Apple Watch, IP6X dust resistance and swimproof design, and increased durability for fitness and activity

Call, text, and email with just a few taps

Listen to your favorite music, podcasts, and audiobooks (for use with GPS models)

Make purchases instantly and securely from your wrist with Apple Pay

Large, Always-On, edge-to-edge display

All-day battery life and fast charging

Sleep stages tracking lets you see how much time you spend in REM, core, and deep sleep

watchOS 9 features an enhanced Workout app, a new Medications app, sleep stages, and greater insights into heart health