The Coala Heart Monitor is a medical device system that can be used by healthcareprofessionals for electrocardiogram (ECG) and digital auscultation (stethoscope) recordings.Persons with known or suspected heart conditions can use the Coala Heart Monitor to recordECG and heart sounds simultaneously for detection of normal sinus rhythm (NSR) and atrialfibrillation (AF) and to make these recordings available to their physician.