The Readmyheart Handheld ECG Recorder was designed to be easy to use for anyone to record signals at any time no matter where you are. The dry contact thumb electrodes single Lead ECG records non stop as long as your thumbs stay planted. Your Heart Rate, ST Segments and QRS intervals are recorded and saved. The included software allows you to download your history with the included USB cable. Comes with Software CD, USB Connection to PC, External electrode cable and carrying pouch. FDA510(k), CE 0197. Sold by the each.