Take calls and reply to texts, right from your wrist Up to 20% faster than the previous Apple Watch SE2 Advanced safety features, including Fall Detection, Emergency SOS,3 and Crash Detection Track your daily activity on Apple Watch, and see your trends in the Fitness app on iPhone Enhanced Workout app with more advanced ways to train Get high and low heart rate and irregular rhythm notifications4 Listen to your favourite music, podcasts, and audiobooks (for use with GPS models) Make purchases instantly and securely from your wrist with Apple Pay5 Swimproof design6 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