Holy crap, that's amazing. My FIL would have benefited from one of these. He got more and more anxious every time the blood pressure machine gave a "no signal" message - and of course anxiety is just great for AFIB as we know.
Yeah it gives you peace of mind. It won't give you a reading if your heart rate is 100 or higher. But generally, it will tell you there are no abnormalities. Which for someone like me who thinks every time I have an elevated heart rate I must be in AFib, that helps my paranoia.