The Beurer PO 30 Pulse Oximeter » measures arterial oxygen saturation (SpO2) and heart rate (pulse) with precision. Ideal for individuals with heart failure, COPD, or asthma, and for athletes training at high altitudes. It features a color display with 4 viewing options, adjustable brightness, and a graphic pulse display. Designed for home and on-the-go use, it includes automatic switch-off, a low battery indicator, a strap, and a belt pouch. A medical device with a 3-year warranty.