My cardiologist suggested this. I had a problem with atrial fibrillation but haven't had any documented problems since. Rather than buying something you have to wear all the time for a long period of time, the doctor suggested this so I could use it every time, for spot checks or when I feel something is wrong to gather more documentation . It's so easy to use and gives a great shot that I can show or even email to the doctor. worth your money.
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