3-in-one ECG – Phonendoscope – OxyMeter is a multi-functional visual stethoscope, which allows for higher efficiency in emergency situations when time required for the assessment and treatment is crucial for patient’s life. The pioneering technology of EPO significantly reduces time spent on evaluating vital signs. It allows to assess electrical activity of the heart (ECG), heart rate (stethoscope) and oxygen saturation (oximeter) simultaneously.