Three months after its launch, the Apple Watch Series 4 has at long last received its most hyped feature. The watchOS 5.1.2 software update was shipped Thursday and brought with it the high-end health tech that stole the stage during the iPhone keynote in September. The best part is you don’t even need a Series 4 to experience some elements of the feature.
The smartwatch’s highly anticipated electrocardiogram (ECG) heart monitor is now available. This will leverage the wearable’s redesigned biometric sensors to give Series 4 users much more accurate readings. Everyone with a Series 1 or later will also gain access to Apple’s irregular heart rhythm detector. This checks the wearer’s pulse every two hours to check for any abnormalities, which could detect signs of serious health conditions like atrial fibrillation (AFib). The only difference is that older Apple Watches will use their less accurate photoplethysmography (PPG) sensors instead of the electrodes that enable ECG in the Series 4.Read More... You Can Finally Get the Apple Watch Series 4's Coolest Feature: Here's How