Apple Watch Series 4: How to use the ECG app - CNET 6 Dec, 2018 0 Comments A new app on the Apple Watch Series 4 can help you monitor your heart's health. from CNET How To https://ift.tt/2E72Ejl via IFTTT Download Tutorial PDF Share Home » CNET How To » Apple Watch Series 4: How to use the ECG app - CNET