Apple Watch Series 4 (GPS 44MM) - Space Gray Aluminum Case with Black Sport Band (Renewed)

Product Overview:Fundamentally redesigned and reengineered. The largest Apple Watch displays 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.Key Features:GPSOver 30% larger displayElectrical and optical heart sensorsDigital Crown with haptic feedback50% louder speakerS4 SiP with a faster 64-bit dual-core processorImproved accelerometer and gyroscope for fall detectionSwimproofwatchOS 5Aluminum case