Change starts within. Apple Watch Series 4. Fundamentally redesigned and re‑engineered to help you be even more active, healthy, and connected. All-New Design Not just evolved, transformed. The largest Apple Watch display yet. Electrical heart sensor. Re-engineered Digital Crown with haptic feedback. Entirely familiar, yet completely redesigned, Apple Watch Series 4 resets the standard for what a watch can be. Part guardian. Part guru. ECG on your wrist. Notifications for low and high heart rate, and irregular rhythm. Fall detection and Emergency SOS. Breathe watch faces. It’s designed to improve your health every day and powerful enough to help protect it. Ultimate Workout Partner Workouts that work harder. Automatic workout detection. Yoga and hiking workouts. Advanced features for runners like cadence and pace alerts. See up to five metrics at a glance as you precisely track all your favorite ways to train. Comprehensive Activity Tracker Made to motivate. Head-to-head competitions. Activity sharing with friends. Personalized coaching. Monthly challenges. Achievement awards. Get all the motivation you need to close your Activity rings every day. Easy Ways to Connect The freedom of cellular. Walkie-Talkie, phone calls, and messages. Stream Apple Music and Apple Podcasts.* More ways to use Siri. Built-in cellular lets you do it all on your watch — even while you’re away from your phone. There’s an Apple Watch for everyone.