(Preowned) Apple Watch Series 4 44mm GPS LTE 97%

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

Fundamentally redesigned and reengineered. 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. You can use Walkie-Talkie, make phone calls, and send messages. Listen to Apple Music and Apple Podcasts. And use Siri in all-new ways. Apple Watch Series 4 lets you do it all right from your wrist.