Forget Black Friday, get the Apple Watch Series 4 (GPS + Cellular, 44m) for $399.97 shipped, today only, originally $529. The device includes Apple’s S4 chip with a custom 64-bit dual-core processor that delivers twice the speed of the previous model while maintaining the same all-day battery life. The back is made from a stunning black ceramic and sapphire crystal, enabling radio waves to easily pass through the front / back for better cellular service. It can also take an ECG reading right from the wrist using the app, which takes advantage of the electrodes built into the Digital Crown and new electrical heart rate sensor in the back crystal. Product page. Read more for a hands-on comparison with the Series 5 and additional information.
Using the app, users simply touch the Digital Crown and after 30 seconds, receive a heart rhythm classification. It can tell you if the heart is beating in a normal pattern or whether there are signs of Atrial Fibrillation (AFib), a heart condition that could lead to major health complications. All recordings, their associated classifications and any noted symptoms are safely stored away (PDF format) in the Health app that can be quickly and easily shared with physicians. More information.