PS + Cellular, Always-On Retina display, 30% larger screen4, 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