The Apple Watch Series 4 has been reinvented and redesigned in its main functions. Every detail, from the curved corners of the new screen to the S4 processor architecture, has been carefully rethought. Apple Watch was already the most personalized product we\'ve ever created. Now it\'s become even more powerful. Designed to improve and help protect your health every day. With high and low heart rate notifications, fall-in and emergency SOS notifications. Choose how you like to train and track everything accurately, you can see up to five training data. With automatic training IDENTIFICATION. New exercises for practicing yoga and walking. Advanced features for race fans, such as cadence and pace alerts. Find the motivation you need to close your Activity rings daily. New competitions. Activity sharing with friends. Personalized workouts. Monthly challenges. Achievement awards. Enjoy walkie-talkie features. Calls and messages. Apple Music and Apple Podcasts.