Introducing Apple Watch Series 4 40mm. Fundamentally redesigned and re-engineered to help you stay even more active, healthy, and connected. The largest Apple Watch display yet. New electrical heart sensor. Re-engineered Digital Crown with haptic feedback. Entirely familiar, yet completely new, Apple Watch Series 4 40mm resets the standard for what a watch can be. Low and high heart rate notifications. Fall detection and Emergency SOS. New Breathe watch faces. It’s designed to improve your health every day and powerful enough to help protect it.

Apple Watch Series 4 40mm has automatic workout detection. New 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. New 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. Walkie-Talkie, phone calls, and messages. Apple Music and Apple Podcasts. They’re all there, right on your wrist.