Apple Watch Series 5 has a display that's always on, showing the time and important information-no need to raise your wrist. It helps you navigate with the built-in compass. Enables international emergency calling. Lets you check on your heart with the ECG app. Tracks your workouts and activity. And has cellular built in, so you can stay connected with just your watch. GPS + Cellular Always-On Retina display 30% larger screen Swimproof ECG app Electrical and optical heart sensors Built-in compass Elevation Emergency SOS International emergency calling Fall detection S5 SiP with up to 2x faster 64-bit dual-core processor watchOS 6 with Activity trends, cycle tracking, hearing health innovations, and the App Store on your wrist