Apple Watch Series 4 44MM Space Gray Aluminum Case Black Sport Band. GPS + CELLULAR Unlocked Smartwatch A1976 (MTUW2LL/A) Inbox

PRODUCT OVERVIEW Fundamentally redesigned and re-engineered. The largest Apple Watch display yet. Built-in electrical heart sensor. New Digital Crown with haptic feedback. Low and high heart rate notifications. Fall detection and Emergency SOS. New Breathe watch faces. Automatic workout detection. New yoga and hiking workouts. Advanced features for runners like cadence and pace alerts. New head-to-head competitions. Activity sharing with friends. Personalized coaching. Monthly challenges and achievement awards. Built-in cellular¹ lets you use Walkie-Talkie, make phone calls, and send messages. Stream Apple Music and Apple Podcasts.

And use Siri in all-new ways - even while you're away from your phone. With Apple Watch Series 4, you can do it all with just your watch! KEY FEATURES GPS + Cellular Over 30% larger display Electrical and optical heart sensors Digital Crown with haptic feedback 50% louder speaker S4 SiP with faster 64-bit dual-core processor Improved accelerometer and gyroscope for fall detection Swimproof watchOS 5