Check your heart rate, and get notifications for low and high heart rate and irregular rhythm. Measure your workouts, and track and share your activity. Take calls, send and receive messages, and listen to your favourite songs from Apple Music. Apple Watch Series 3 lets you do it all right from your wrist. election may vary; see a sales assistant for available models. Some straps are sold separately. Apple Watch Series 3 requires iPhone 6s or later with iOS 13 or later.