·   Temperature sensor²

·   Measure your blood oxygen with a powerful sensor and app¹

·   Get high and low heart rate

·   Advanced safety features, including Fall Detection, Emergency SOS,³ 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,⁴ and increased durability for fitness and activity

·   Call, text, and email with just a few taps

·   Listen to your favorite music, podcasts, and audiobooks

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

·   All-day battery life and fast charging⁵

·   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.