Previous Apple watches were impressive wearables, but the Apple series 4 is touch on another level for a smartwatch not just because its larger, edge-to-edge screen or its enhanced fitness tracking. This device provides fall detection and emergency SOS features, as well as extreme heart rate notifications. It also has automatic workout detection, advanced features for runners, and detailed activities tracker. Though quite pricey, this GPS enabled watch is a standard for smartwatches.
Improved heartrate sensor with EKG/ECG
Improved processor speed
Reduced battery performance
No native sleep detection