Fundamentally redesigned and reengineered. The largest Apple Watch display yet. Built-in electrical heart sensor. New Digital Crown with haptic feedback. High and low heart rate notifications. Fall detection and Emergency SOS. New Breathe watch faces. Automatic workout detection. New yoga and climbing 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 cellular means that you can use Walkie-Talkie, make phone calls, and send messages. Stream Apple Music and Apple Podcasts. And use Siri in all-new ways – even at the same time as you are away from your phone. With Apple Watch Series 4, you’ll do it all with just your watch.
Renewed products look and work like new. These pre-owned products have been inspected and tested by Amazon-qualified suppliers, which in most cases perform a full diagnostic test, replacement of any defective parts, and a thorough cleaning process. Wireless devices have batteries tested to have a minimum of 80% capacity relative to new on the time of sale. Packaging, wall plug, Watch Strap, and charging cable is also generic (headphones not included). Wireless products on Amazon Renewed come with the 90
GPS + Cellular. S4 SiP with faster 64-bit dual-core processor
Over 30% larger display and 50% louder speaker , 50% louder speaker
Digital Crown with haptic feedback. Electrical and optical heart sensors.
Improved accelerometer and gyroscope for fall detection. Swimproof. watchOS 5