Simulate a 12-Lead ECG With Apple Watch Series 4 or Later

This Instructable shows you how to extend the ECG feature of Apple Watch® series 4 or later from the basic Lead I recording to simulate a full 12 lead ECG. The ECG is “simulated” because of course the readings cannot be taken simultaneously, so it’s therefore of limited diagnostic value.

Disclaimer

For entertainment purposes only. For adults only. This procedure is not intended to diagnose any medical condition. Any recordings made by following this procedure should not be interpreted as demonstrating or disproving the existence of any cardiac abnormality or heart disease. If you have any health concerns, consult a qualified medical professional. This document and procedure are not endorsed by Apple Inc.

Requirements

Apple Watch® series 4 or later

About 3 metres of insulated copper cable (any gauge will do)

Some Velcro® strap or similar to secure the stripped cable to limbs

Useful but not essential: a partner to assist you with the later readings