I love this device. I have shown it to both of my Cardiologists (One for Structural the other for Electrical Heart Issues). Neither had seen this device before. I love that it is so lightweight, easily fits in my work pocket on my scrubs, super easy to use, quick downloads to my phone and even faster transmissions via email to my Physicians. This device is cheaper than the competitor, and made locally 60 miles from where I live. It is well worth the money. I highly recommend to anyone with rhythm disturbances. My neighbor just ordered one due to my happiness with this device.