Hi,

Sorry to bump this thread but you was asking about ECG accuracy and maybe I could help in that matter. In a: time.com/4527843/accurate-wearable-apple-watch-fitness-tracker study, chest straps clocked at 99% of accuracy compared to traditional ECG scanners. So going with a typical chest strap like Aidlab you shouldn't be worried about tracking ECG, as 99% is absolutely OK.